Category: nature

Thanks for a Spelunking Time!

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Humans and caves go back to the dawn of time. In popular media and imagination, people of the Palaeolithic era are cave-dwellers, armed with rocks and clothed in animal skins and furs. While it is true that human ancestors did live in caves in that period, these were probably not their predominant dwellings. But since bones, artefacts, weapons and paintings in caves are sheltered and preserve better, a lot of objects used by early humans are found there rather than anywhere else, giving rise to the perception that humans mostly inhabited caves.

Mawsmai Caves
Mawsmai Caves, Meghalya

Our fascination with caves is long-standing. These dark, mysterious places figure in many an adventure story. Aladdin for instance, found his magic lamp in the Cave of Wonders. The thieves in the Ali Baba story hid their treasures in a cave which opened with the famous spell ‘Open Sim Sim’. Pirates are often associated with caves, as are many children’s stories involving lions and tigers.

Most caves are formed by the dissolution of limestone. Why does this happen? Rainwater as it falls to the earth dissolves carbon dioxide that it encounters in the air it passes through. As this carbon-di-oxide laden water percolates through the soil, it turns into a weak acid. The acid slowly dissolves the limestone along the joints, planes and fractures in the soil to form cavities. Some of these cavities in time become large enough to form caves.

India has its share of breath-taking caves which are of interest from a geological standpoint as formations;  from the archaeological stand point in that they house ancient cave paintings and artefacts; and from an aesthetic and religious standpoint—as the home of fantastic carvings and temples.

The earliest evidence of humans in India have been found in the Bhimbetka caves in Madhya Pradesh, with some of the shelters showing evidence of being inhabited 1,00,000 years ago! The cave paintings here go back to about 8000 BC. The Ajanta and Ellora caves in Maharashtra have Hindu, Buddhist and Jain temples, with the oldest dating as far back as 2nd century BC! Badami, Elephanta, Amarnath and Borra are among other popular and highly-visited caves.

But Meghalaya may take the prize when it comes to caves. The Krem Liat Prah caves in the Jaintia Hills are listed among the longest caves in the world, with a length of 30,957 meters—and this is only the explored length! In fact, the top nine out of the ten longest and deepest caves in India are in Meghalaya!

Another interesting cave is the Siju Cave of the Garo Hills, also known as the Bat Cave, which spans over 4 kilometres long, but with nearly all of it is filled with underground streams and rivers, is not easy to explore.

During my recent visit to Meghalaya, we were able to visit three touristy caves (Mawsmai and Arwah caves, and the Garden of Caves at Laitmawsiang) which easily are accessible and not too difficult for even the inexperienced. And that gave me a small taste of what it would be to be a spelunker —a person who walks and climbs in caves as a sport (from the Latin spelunca, which in turn derives from Greek spelynx, both of which mean ‘cave’).

A lot of the work of discovering, exploring and bringing to light the caves of the state has been done by the Meghalaya Adventurer Association founded by Brain Dermot Kharpran Daly and his group of dedicated spelunkers.

But all is not well with the caves of Meghalaya. Limestone mining for the cement industry is a major threat to the caves. As one drives across the state, one can see hill after hill carved and hollowed out. In fact, this has already led several disasters including the collapse of the Krem Mawmluh Caves, the seventh-longest cave system of the state. Much of this mining is now illegal, but that does not mean it has stopped!

Is there nothing we can do to stop the depredation of these amazing structures that have formed over million years?

–Meena

Bridging the Past and Future

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Bridge-building brings to mind heavy equipment; tonnes of steel and concrete; engineers and overseers by the dozens. And lakhs of rupees.

Well, what if there were bridges which involve some rubber trees; centuries of traditional knowledge and skill passed down from one generation to another; and a lot of cooperation? And very little money.

And indeed there are such bridges by the dozens in Meghalaya. Built by the Khasi and Jaintia communities, the Living Root Bridges, locally known as Jingkieng Jri, play a key role in rural connectivity in the dense forest areas of the state, which are also among the wettest areas of the world (think Cherrapunji).

Living Root Bridge

The process begins with the planting of two rubber trees– Ficus elastica—one on either side of the river. These trees take about 10 years to grow and give rise to secondary aerial roots.  A bamboo scaffolding is created across the river, and these roots are woven together and trained onto to this to start creating the structure. The aerial roots thus grow across the river, and when they reach there, they are planted again on the opposite side. The roots along the scaffolding grow thicker and intertwine. The roots need to be guided to grow in the right direction for the next few decades, after which they can stand on their own.

The planning and engineering skills required to build these bridges is enormous– they often rise 50 to 100 feet in the air and may be as much as 175 feet in length. Many are ‘single-storey’ bridges, but there are ‘double-storey’ ones as well. They have always been built and cared for by the local communities, and the tradition continues.

The bridges need loving care—for instance, every two years, the bamboo scaffolding has to be changed since the moisture and humidity might damage it. Properly cared for, these can last for a hundred years and more.

These bridges have been around for centuries and are even today, about 100 are in use, connecting over 75 villages. While local communities use them for their normal day-to-day movement, these bridges are also now major tourist attractions. They also act as corridors for animals to safely cross the rivers—barking dear and clouded leopards have been recorded to use these bridges. The bridges support the growth of moss and provide a habitat for squirrels and other small animals, and nesting sites for birds.

The technique is used not just for making bridges but also other structures that are needed locally, for instance,  ladders and steps to provide a reliable mode of movement especially during the monsoon season; platforms and towers which serve as lookout points; erosion and landslide prevention structures to protect slopes and help in soil stabilization.

A true testimony to the patience, skill and cooperative spirit of the communities who build, use and care for them. And also to the effective methods of transmission of traditional knowledge, so that generation after generation is able to do this work effectively.

This sustainable and eco-friendly tradition has been recognized internationally. In fact, as of last year, the Living Roots Bridges or the Jingkieng Jris has been included in the UNESCO’s tentative list for World Heritage Site status.

I was lucky enough to see such a bridge and walk across it. It was an amazing experience. The one I visited was very accessible to tourists. But some other intrepid members of our group went to see a double-storey one, which involved six hours of trekking. And came back exhausted and with aches and pains in every joint. But they said that every pain, ache and stiff joint was worth it, and given half a chance, they would do it again!

So take the soft route or the hard, but if you can possibly see a Living Root Bridge, it will be a memorable experience.

–Meena


On Orchids

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For most of us:

Orchids = Rare

Orchids = Exotic

Orchids = Beautiful.

I recently went to Meghalaya where I visited an orchid park. And of course the variety and beauty of the orchids we saw were amazing. But when I tried to figure out a little bit more about these flowers, I found all the three equations mentioned above, which have been firmly planted in my mind for decades, to be false!

Orchids in fact belong to one of the top two most-common families of flowering plants on earth! This is the family Orchidaceae which comprises about 750 genera and close to 28,000 species!  So orchids are not rare!

Orchids

The dictionary meaning of ‘exotic’ is ‘origination in or characteristic of a distant foreign country’. Actually, with their wide distribution, orchids may be among the least exotic flowers. Orchids grow on every continent except Antarctica. At least four species have been reported from north of the Arctic Circle. So orchids are not exotic in most parts of the world! 

And while most orchids are beautiful, there are some which are warty, bumpy, hairy and unbeautiful. In fact, the latest orchid to be discovered—the gastrodia agnicellus–from a forest in Madagascar, has been dubbed “the ugliest orchid in the world” by the Royal Botanical Gardens, Kew in the United Kingdom. It has been likened to a soul-sucking eyeless worm. While I am not very comfortable to have anything castigated so severely on the basis of looks, I have to admit after looking at pics of this flower, orchids are not always equal to beautiful!

Ok, easy enough to demolish myths. Now time to look at some facts.

To begin with, what are orchids? Orchids come in different sizes, different shapes, grow in different parts of the world. But the one characteristic which unites them, as well as differentiates them form other flowering plants, is the fusion of the male portion of the flower (stamen) with the  female portion (pistil), into one structure called the column—often visible protruding from the center. Orchids have three sepals and three petals, which all appear to be part of the flower. The middle petal is modified and is usually brightly coloured and exudes a scent.  

Orchids are among the oldest flowering plants known. A few years ago, Harvard University scientists discovered a fossilized bee carrying orchid pollen which dates back at least 15 million years. However, scientists speculate that orchids have been around much longer than that, maybe as much as 100 million years.

Orchids

Orchids have the tiniest seeds in the world. A single seedpod can have up to 3 million seeds in it.  The seeds are so small they can only be seen under a microscope. The plants take about 5-7 years to bloom once germinated, and can live up to a hundred years.

Incidentally, the vanilla bean comes from a species of orchid.  It is the only orchid which is commercially grown and harvested, not for its flowers but its beans!

India has a vast orchid diversity—a total of 1256 species have been recorded, out of which 307 are endemic to the country. But our orchids are under pressure. This pressure mainly comes from illegal harvesting and exploitation for trade. Orchids are illicitly collected from the wild and traded as ornamental plants.

So yes, do get orchids for your home-garden. They will surely add a touch of colour and beauty (unless of course you choose the gastrodia agnicellus!). But make sure they are sourced ethically. For many of them are indeed under threat.

–Meena

Underground Treasures: Tubers

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This is the season of relishing a variety of underground edible delights. These are the root and tuber vegetables that are consumed in numerous ways, in a variety of dishes. In Gujarat these are celebrated in the undhiyu, a mix of winter vegetables led by several kinds of tubers including yams, sweet potatoes and potatoes, traditionally slow-cooked in an earthen pot. The winter season is also a multi-coloured celebration of root vegetables like carrots, beets, radish, turnip, fresh turmeric and ginger that add crunch, colour and flavour to salads, and sweets (carrot hawa!).

The distinction between tubers and roots is more botanical than culinary. Both root vegetable and tubers are geophytes, a botanical classification for plants with their growing point beneath the soil. All tubers fall under the root vegetable umbrella, but not all root vegetables are tubers. Root vegetables are aptly named because the meat of the crop is the root of the plant, growing downwards and absorbing moisture and nutrients from the soil. Above ground are the leaves, below ground, are the roots which are eaten as vegtables. Tubers, however, form at the base of the root. Tubers store energy and support new stem growth. You can get several tubers from one above-ground plant, while root crops will have one root vegetable from each plant.

The general belief is that tubers are starch heavy and difficult to digest. Many people feel very full after eating tubers. In fact, the complex carbohydrates found in tubers balance the glucose levels in blood, and help remain full for a longer period, thereby prevent cravings and overeating.  While they do contain more carbohydrates than protein, tubers are a rich source of essential nutrients—vitamins (especially vitamin C), minerals like copper, manganese and potassium, and beneficial enzymes. They are also high in fibre that helps to keep the digestive and excretory system healthy. 

Indigenous people all over the world have traditionally consumed a variety of local tubers to supplement their diet as a balanced and healthy food source. In the Andean region of South America, tuber-forming or storage root crops have been continuously domesticated from wild ancestors and improved via selection and breeding during centuries by the local indigenous people. Some have been used as part of traditional medicine for their healing properties. Tubers thus provided food security as they could survive the vagaries of weather conditions, especially drought.

Tubers are slowly attracting attention again for all these reasons. Tubers are packed with nutrition, but majorly neglected in our diets. They are naturally resistant to pests and diseases, and are chemical-free unlike most fruits and vegetables. Unlike other food, tubers survive for three-four months after being pulled out of the soil.

Realising their multi-faceted potential for a hunger-free world, the Food and Agriculture Organization has categorised tubers like the sweet potato, along with pulses and millets, as Future Smart Food (FSF). 

However with the spread of monocultures and new varieties of cereal crops, as well as accessibility and popularity of other vegetables, over time the genetic as well as nutritional properties of tubers have been largely forgotten or neglected.

This is what motivated Shaji NM, a farmer from Kerala to take on a one-man crusade to save and celebrate tubers. Shaji grew up in a family of farmers that often resorted to subsisting on a diet of different tubers that they cultivated, or collected from the nearby forest, when they could not afford any other food grain. While Shaji himself became familiar, early on, with a variety of tubers, as he grew he saw that these were slowly being forgotten as the market became flooded with cereals and vegetables from far and wide. He also realized that while traditionally most farmers had cultivated some tubers in their fields, these were being increasingly replaced by the cultivation of cash crops like pepper, cardamom, nutmeg. Shaji felt that he needed to do something to protect and preserve tuber varieties before they disappeared altogether. And thus began a mission that has been continuing for almost two decades now. 

Shaji began travelling across Kerala to look for wild tubers. He went deep into the forests to meet the local tribal communities. It is here that he discovered a variety of wild yams and other tubers that were part of their traditional diet, grown in small patches near their homes, or collected from the forest. These were not grown nor available commercially. Shaji saw that many such varieties were on the verge of disappearing and he began to collect the seeds of all the varieties that he came across. He brought the seeds back and started growing these on his own one acre of land. But he also began to give the seeds back to the local communities, encouraging them to cultivate these and include these in their diet.

Today Shaji has accumulated a rich basket of tuber species. Greater yam, lesser yam, elephant foot yam, arrowroot, colocasia, sweet potato, tapioca, Chinese potato are just a few among the over 200 varieties of tubers that he grows on his small farm named Kedaram that means ‘cultivation’ in Malayalam. Shaji’s passion has extended to preserving other endangered plant varieties as well. He cultivated over 52 varieties of indigenous and traditional rice varieties, 100 varieties of vegetables and fruits, as well as medicinal plants. With a small fish farm, rearing of honey bees and a few cows and goats, Shaji has demonstrated the enormously rich potential of even a small landholding.

Shaji organizes a seed festival at his farm every year. He generously gives away, for free, the seeds of tubers and rice to others who want to cultivate these with the strict condition that the people return the same amount of seeds they take from him once they harvest the crop. This helps to ensure that the seeds are properly cultivated.

Shaji N.M., a truly grassroots biodiversity champion, strives to spread his mission every way he can from personal interactions, to technology like Facebook to connect and train farmers. The Tuber Man of India as he is popularly called has been recognized for his efforts through several state and national level awards.  He was awarded the India Biodiversity Award 2021 in the individual category of Conservation of Domesticated Species.

I will certainly relish my undhiyu with more respect this year!

–Mamata

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Aquarium Alert

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Last week, a huge aquarium housed in a Berlin hotel burst. Water, about 1500 fish, and debris flowed across the street causing chaos and slightly injuring two people. It was early in the morning, otherwise the 1 million litres of water pouring out from the aquarium might have led go many more injuries.

The AquaDom which burst was a star attraction of a complex with hotels, cafes and shops. It is supposed to have been the biggest cylindrical tank in the world. It is still not clear why the aquarium cracked when it did. It is speculated that the sudden overnight fall in temperature—it went down to -10c that night—may have caused in the acrylic glass tank to crack, which then led to its exploding under the weight of the water.

There were about 1500 fish of 80 species housed in the tank, of which most died. Just a few fish which were at the bottom survived.

Aquaria have never been easy to construct or maintain. Quite apart from managing the engineering challenges of building a structure that can hold the huge weight of water,, the design of these structures must take into account the requirements of the different types of creatures they house, since modern aquariums include all types of aquatic organisms: mammals, reptiles, amphibians, and invertebrates as well as fishes in one exhibit. And what the tank is made of also requires thought–many substances, especially plastics and adhesives which are nontoxic to humans, are toxic to water-breathing animals.

Maintenance issues include problems such as water clarity, dissolved wastes, temperature, tank decor, disease treatment, and nutrition. And then of course, the glass has to be such that it does not reflect, so that visitors can see the creatures. Further, the structure has to be acoustically properly designed.

Maintaining water quality is critical of course—first and foremost, the inlet water must be free of pollutants including sewage and industrial wastes.  In fact, chlorine and other additives have been removed from water before it can be used for this purpose. The gaseous equilibrium of the water with the atmosphere has to be maintained to ensure adequate oxygen and to avoid super-saturation with nitrogen. Provision for  purification of metabolic wastes is of course critical.

Even addition of plants to an aquarium has to be done with care. Since aquaria are usually kept in bright light for many hours, the plants there photosynthesize much more, and the balance of carbon di oxide and oxygen and water in the water goes awry unless carefully balanced.

India never did have an AquaDom equivalent, but the Taraporewala Aquarium in Mumbai has a hoary history. It is the oldest aquarium in the country, and was opened by Dr Rajendra Prasad, the first President of India in 1951.

taraporewala-aquarium
Taraporewala Aquarium

The cost of building at that time was about ₹8 lakhs, of which ₹2 lakhs came from a Parsi philanthropist D. B. Taraporewala. So the government graciously named this aquarium after him.

It has over 100 species of fish and other aquatic animals like sharks, seahorses and turtles. The collection consists of freshwater, marine and tropical fishes brought from across the world.

It was a major tourist attraction for locals and tourists. And to keep up with the times and modernize the exhibits, it went through a major renovation less than 10 years ago.

However, construction work undertaken for the Mumbai Coastal Road project may likely have weakened the 70-year-old building and it was feared to be structurally unsafe. An audit was carried out in March 2022. Based on this, the government was to decide whether to repair the structure, re-construct it, or shift the aquarium from its location on Marine Drive to another location at Worli.

As of now, sadly the Aquarium is closed, and it is not clear what the government has decided.

Fish are probably low down on the priority list of policy-makers and decision-makers.

–Meena

Hoopoe Who?

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This is the time of year when I look at my little patch of lawn in the mild December sunshine and miss the winter visitors who used to add little dabs of colour and movement on the grass. Alas, in the last few years, with the erstwhile fields now transformed into towering concrete jungles, these feathered friends have forsaken us. Among these was one of my favourites—the hoopoe.

The Eurasian hoopoe (Upupa epops) is a striking bird distinguished by its appearance. A fawn-coloured bird, about the size of a myna, it has zebra-like black and white markings on its back, wings and tail; and the head is topped by a conspicuous fan-shaped crest. It has a long, slender, gently curved beak.

The bird has a soft, musical hoo-po or hoo-po-po call which may go on intermittently for ten minutes at a stretch. It may be this call that has given rise to its name. Another possible root of its common English name is that it is a derivation of the French name for the bird huppee which means crested.

Hoopoes have two basic habitat requirements: bare or sparsely vegetated ground and vertical surfaces with cavities for nesting. Hence they are found in a wide range of habitats including lawns, gardens, and groves. They are usually found singly, but sometimes in pairs, striding over the ground and periodically pausing to probe the ground to forage for food. They eat mainly a variety of insects, small reptiles, frogs, plant matter, seeds and berries. The beak is also used as a lever to move stones and flake from tree bark. The strong musculature of the head allows the beak to be open like forceps when probing the soil. While probing, the crest is folded back into a neat point behind the head.

While mainly a ground-walking bird with a quail-like waddling gait, the hoopoe has broad, rounded wings capable of strong flight. Due to the wings half closing at the end of each beat or short sequence of beats, hoopoes have a characteristic undulating flight like a giant butterfly. As it lands, the crest opens out fully, as it does when the bird is agitated or frightened. The hoopoe likes to sunbathe by spreading its wings and tail close to the ground and raising its head. Hoopoes also enjoy dust and sand baths.

Hoopoes are territorial and the males call out to proclaim the ownership of their territory. The male and female pair for a single mating season. The nest is in a natural hollow in a tree or wall lined untidily with straw, rags and rubbish; which usually make the nest stink. The female alone is responsible for incubating the eggs. It is the stink which act as the defence against predators. The stink is not just from the rotting rubbish but also from a foul-smelling liquid generated by the incubating female. The secretion is rubbed into the plumage of the mother and chicks to deter not just predators but also parasites and harmful bacteria.  The secretions stop when the nestlings are about the leave the nest.

These distinctive birds have made a cultural impact over much of their range. Considered sacred in Ancient Egypt, they were depicted on the walls of tombs and temples. The Egyptian considered the hoopoe as symbolical of gratitude because it repays the early kindness of its parents in their old age by trimming their wings and bringing them food when they are acquiring new plumage.

The Arabs call it the doctor, believing it to possess marvellous medicinal qualities. The hoopoe is also considered a waterfinder. It can see through the earth and can point out hidden springs, a virtue which is much appreciated by desert dwellers.

In contrast, hoopoes were thought of as thieves across much of Europe and as harbingers of war in Scandinavia. In Estonian tradition, they are strongly connected with death and the underworld. Their song is believed to foreshadow the death of people or livestock. But in many parts of the world they are seen as harbingers of good things.

In the Middle East, there is an interesting legend about how the hoopoe got its crown. Solomon the wise king was once journeying across the desert, and was fainting with heat, when a large flock of hoopoes came to his assistance, and by flying between the sun and the King, thus protecting him from the strong sun.

Grateful Solomon asked the birds how he could reward them. After some consultation among themselves the hoopoes answered that they would like each bird to be decorated with a golden crown. Solomon cautioned them that this would not be in their own interests, but as the birds persisted, he gave each Hoopoe crown of gold. For some days the Hoopoes preened in self-admiration and showed off their gift to all the other birds. Then a bird-catcher discovered the prize on their head, and as the word spread, every hunter in the land started pursuing and catching hoopoes. The hoopoes’ very existence was in danger. They begged for forgiveness for their greed and requested Solomon to take away their crowns of gold. Solomon granted their request, and removed the golden crown from their heads; but, being unwilling that the birds should be left without a mark by which they might be distinguished from their fellows, he substituted a crown of feathers for that of gold. And thus the Hoopoe still wears its distinguishing crown of feathers.

It must be that Solomon also gave the hoopoes the gift of wisdom. A classic 12th-century Sufi epic poem titled The Conference of the Birds tells the allegorical story of thirty birds who set out on a journey across the seven valleys of Quest, Love, Understanding, Detachment, Unity, Amazement, and Death in a quest to find their true king, Simorgh. The birds are led through the journey by the Hoopoe who the birds recognize as their spiritual leader thus:

Dear hoopoe, welcome! You will be our guide:
It was on you King Solomon relied
He knew your language and you knew his heart.

Nevertheless each bird is afraid to undertake the journey, and comes up with its excuses. The poem is made up of one-to-one stories in which the Hoopoe addresses each bird’s concern and excuse. What makes the Hoopoe’s responses even more insightful are the anecdotes and stories that follow each piece of advice. The Hoopoe is full of words of encouragement and wisdom reminding the birds to look at the bigger picture and aspire for the higher goals; explaining that the quest for ultimate wisdom must not be limited by oneself or the system! These words are as relevant to every one of us too.

The ocean can be yours; why should you stop  
Beguiled by dreams of evanescent dew
The secrets of the sun are yours, but you
Content yourself with motes trapped in beams.”

–Mamata

Zoos and the Sense of Wonder

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Cheetahs at Oakland Zoo. Picture: Oakland Zoo site

Oakland Zoo is celebrating its annual Glowfari Festival through November, December and January. This year, the highlights include ‘a walkabout through the land down under with kangaroos and koalas, icons of the California coastline including whales, otters, and jellies, exotic animals of the tropical rainforest, and a trip to the past with a towering T-Rex and a megalodon shark tunnel!’ Ok, apart from the t-rex and megalodon shark, that’s not very usual for a zoo, right? Well, not till you learn that these are not real animals that the visitors will see but hundreds of huge hand-painted animal lanterns  placed throughout the zoo’s campus, making for a totally unique tour of the zoo by night. The spectacular lanterns are arranged throughout a mile-long pathway. They glow in the dark, turning the zoo into a fairyland. The tag line of the fest is ‘A Wildly Illuminating Lantern Festival’.

Sean Kenney’s Lego Butterfly

Some years ago, a New York based artist Sean Kenney toured several zoos and botanical gardens in the US with over 150 life size and larger-than-life size sculptures of animals and plants made with, hold your breath, Lego blocks! Lego blocks are this artist’s chosen medium. who turned his The largest sculptures took up to nine months to construct. The pieces are set in place as per a master-plan, and glued tother. A lion, for example, took 474 construction hours and Lego 48,248 bricks to build.

Brevard Zoo currently has an exhibition called ‘Life Beneath our Sea’ which displays a dozen giant sand sculptures hand-crafted by world-class artists using over 500 tonnes of sand, which is bringing the beauty of underwater scenes to the viewers.

These are just a few examples of innovative programmes being done by zoos to attract visitors, bring the beauty of wonder of nature to them, and educate them.

It is well recognized that experiences with animals and educational elements can increase zoo visitors’ motivation to take conservation action, and this is why zoos place so much emphasis on educational initiatives.

San Diego Zoo, probably the top-rated zoo in the world, has developed curricula on a number of topics that can be taught through a combination of classroom activities, along with activities to be done during a visit to the zoo. The topics range from the Panda curriculum to the Wildcats curriculum to Animal Adaptations to the Australian Outback curriculum. They also organize field trips with guides for schools, opportunities to get close to small animals, safari park guided field trips, special early morning trips and even sleepovers at the safari park!

The Singapore Zoo has specific programmes for various levels, from pre-school to primary school to secondary school. They also have professional development programmes for teachers. These are very structured experiences. For instance, one of the education programmes offered to secondary students ‘Fragile Forest’ helps them get a multi-dimensional experience of life in a rainforest ecosystem. It includes a walk amidst fascinating flora and coming face to face with lemurs, bats, butterflies, birds, tarantulas, snails, millipedes, etc. This tour also demonstrates the importance of rainforests to our lives, and ways individuals can help to save them.

And it is not just children that zoo education caters to. Many zoos like the Smithsonian offer internships for adults and senior students, and encourage volunteering.  

A number of zoos pivoted during COVID to offer virtual zoo experiences, including pre-recorded virtual Zoo tours, online classes allowing children to personally interact with Zoo educators and virtually meet several animal ambassadors up close. Some Zoos like the Taronga Zoo, run an educational TV channel, with new videos releasing every week. Other zoos offer virtual guided tours through the Zoo Commissary, Vet Hospital, and behind the scenes Aquarium.

Yet other zoos offer educational kits like exhibit design kits, , biological artefacts (i.e. skulls, feathers, shells, etc), and materials to conduct conservation learning games.

India too places emphasis on zoo education. The Central Zoo Authority got Centre for Environment Education to develop a Zoo Education Masterplan—a 330 page document which provides zoos in India a detailed way-forward on the why, what and how of education at such facilities.

Lets hope zoos across the world are able to effectively use education to support conservation.

–Meena

Going to the Zoo

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As a child in Delhi, one of the major highlights of the year was a visit to the Zoo. And if we were lucky enough to have guests from out of town with children, it was a bonanza year, because the zoo would be on the itinerary for the guests, and we could go along too. The birds visiting the wetlands which are a major part of Delhi Zoo; the lions, tigers, elephants, zebras; the mischievous monkeys, the exotic zebras and giraffes—these were our only encounters with creatures that we otherwise only saw in 2-d in books. And from such visits grew our wonder at the world of nature and our love for it.

And that indeed is one of the stated purposes of zoos—to introduce visitors to nature and to lay the foundation for a conservation ethic. As India’s Central Zoo Authority (CZA) sums up, the objectives of zoos are:

‘CONSERVATION: To be involved in programs which assist the survival of wild populations of animals. This is often done in partnership with other organisations.

EDUCATION: To increase the level of awareness, knowledge and understanding of visitors about animals, the environment and conservation, and to motivate behaviour change which will help the environment.

RESEARCH: To conduct and facilitate research on animals both in captivity and in the wild, with particular emphasis on threatened species.

RECREATION: To provide enjoyment and enrichment for visitors through close contact with living things.’

I spent two decades of my career as an environmental educator, and zoo education was something I was involved in at some stage. I still carried the deep impacts of my childhood zoo experiences and worked with a passion to make zoo visits more educational, striving to sow the seeds of love, respect and care for the environment, nature and animals.

Zoo

But last week, I took a 4-year old to the Bannerghatta Zoo and Safari Park. She liked it. But I saw nothing like the excitement and wonder I remember feeling as a child. She was reasonably excited when she saw lions and tigers and bears close up during the safari. And then during the walk through the zoo, she did like the zebras and monkeys and giraffes, but I could see that she was disappointed that they were just standing there, not ‘doing’ anything. And then when we saw a herd of elephants, she could not see the baby-elephants clearly, which she was not happy about. And as she walked through the zoo, she was tired and hot and cranky. All in all, if my childhood zoo visits were an 11/10, hers was a 7/10.

I got to thinking why. And then I realized that she had the wildest and most remote of habitats and the most exotic of animals at her fingertips. She just had to switch channels in the comfort of home to see lion cubs playing with their mother’s tail; elephants mud-bathing; kingfishers swooping in for a fish catch; tigers chasing a deer. No wonder the physical sights were not so exciting.

I still believe that zoo-visits have a major role to play in nature education. But obviously, it cannot be business as usual. While zoos in India are making some efforts to make onsite education more exciting, there are international zoos which have taken this to new levels of innovation, immersion and interaction. Next week I will share some interesting and really cutting-edge programmes.

India has 145 recognized zoos in India as per CZA. Pre-Covid estimates indicate that zoos are one of the highest visited public spaces, with over 8 crore visitors every year. Zoos are still the most accessible way to see animals for real–national park and sanctuary visits are expensive and time-taking. We cannot lose this opportunity of zoo-visits to set off positive action for the environment.  And to do so effectively means we must understand the challenges that new media poses to traditional visit experience, as well as recognize the exciting opportunities it offers.

–Meena

The Tree Pies Are Here!

~ millennialmatriarchs ~ 2 Comments

The last couple of weeks we have been hearing a new addition to the usual morning symphony of bird calls in our garden. This new sound was different—a somewhat harsh and raucous intermittent call. The other birds fall silent while this fills the air. As we looked for the source of sound, at first we could not see anything except the familiar babblers and doves and crows going about their morning business, until a rustling among the drying leaves of the tall old palm tree caused us to look closer. Suddenly we saw a hitherto unknown bird emerge and perch on the branch. Another swoop brought its partner flying from beyond to perch next to it. The first thing that struck us was the striking colouring and long tail that set these birds apart from the more staid and dull-hued birds that usually frequented the tree.

Rufous treepie
Rufous treepie

The tree-pies were in the neighbourhood! Last year they had caused a similar excitement when we had spotted them one day, but sadly that was only a one-time sighting, and we did not see them again. This time it seemed as if they were seriously prospecting the tree as a suitable site for potentially settling in to nest and breed.  

The Rufous treepie (Dendrocitta vagabunda) belongs to the Corvidae family, to which also belongs the common crow. The bird is endemic to the Indian subcontinent, and it is found in open forests, woodlands, groves and gardens in cities and villages. This species is not found elsewhere.

The body of the bird is the size of a myna, but it is elongated with a long tail which distinguishes it. The body is rust orange, with an ashy-black head and breast. The tail feathers are black interspersed with light grey, and the wing feathers are black with a white-grey band down the outside. The beak, legs and feet are black; the eyes are deep red with black pupils. The beak is slightly hooked at the tip.  With such striking colouring, the tree pie makes quite a contrast to its relative, the common crow, with its monochromatic colouring.

What this bird does share with its Corvid family kin is the attraction to shiny objects. Tree pies look for and steal shiny objects such as coins and small jewellery, and stash these in their nest. Possibly a male ploy to attract the females! No wonder then that one of the local Indian names for this bird is taka chor, literally ‘coin stealer’. The bird is also called kotri, derived from one of its calls which sounds like a screeching ‘ko-tree’.

The tree pie indeed has quite a repertoire of calls—from the loud, harsh and guttural to some which are sweet and melodious like ko-tree or bob-o-link. Thus it is confusing when one looks for the source of the squawking call, only to find a melodious tune emanating from the same place. It makes one wonder if it is one bird or several different ones calling.

The tree pie is an arboreal bird, rarely seen on the ground. It is an agile climber and hops agilely from branch to branch, or flies from tree to tree with a swift noisy flapping followed by a short glide on out stretched wings.

The rufous tree pie is an omnivorous and opportunistic feeder. Its diet includes fruits, seeds, small lizards, insects, as well as the eggs of other birds, and even small birds and rodents. In the forest tree pies often join mixed hunting groups of birds like drongos and woodpeckers; they collectively disturb insects in tree canopies and feast on them. 

Tree pies make their nests concealed in the foliage of middle-sized trees. The nest resembles that of its cousin the crow, made of thorny twigs, but it is deeper and well-lined with rootlets. It is here that 4-5 eggs are laid, and when they hatch both male and female share the parental duties.

A fortnight has passed since we heard the first harsh call of the tree pies. Since then we have been able to also enjoy the rest of their repertoire, in something like sound-surround. The soft melodious chirping coming from the foliage of the karanj tree, the bob-o-links that punctuate from the neem tree, and the kotri call from the top of the straggly palm. If we look hard enough we can also spot the tip of the long tail peeping out from the leaves, and occasionally are treated to a glimpse of its sweeping graceful flight from one perch to the other. It looks like the tree pies are here to stay this year.

–Mamata

Splendid Bloomer: Silk floss Tree

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In most parts of India, March is usually the month when the big trees are in bloom. In cities like Delhi which have avenues of old trees, it is a delight to see the changing colours of the blooms on different trees. October however, is the month that is marked by the spectacular blooming of the Silk floss tree.

Sometimes mistaken for the Silk Cotton tree with its flamboyant red flowers, the Silk floss tree (Ceiba speciosa), is unique in many ways. The species was originally named Chorisia speciosa in 1828. The generic name Chorisia was in honour of Louis Choris, a Russo-German painter and explorer who was one of the earliest expeditionary artists (artists who accompanied military, exploring, and trade expeditions to document the expedition through sketches and paintings). He accompanied Otto von Kotzebue, a Baltic German navigator in Russian service on several expeditions across South America and Europe, and is said to have painted nature as he saw it.  However, in 1998 the genus Chorisia was merged with the genus Ceiba (which is the Brazilian name for the tree). Speciosa means ‘beautiful’, or ‘splendid’ (Latin), alluding to its spectacular flowers. Thus, the currently accepted name for the species is Ceiba speciosa.

This grand ornamental deciduous tree is in fact native to Argentina and Brazil. With its bulging prickly trunk, exotic flowers, great height, and pods with pea-sized seeds and silky floss, this unique tree literally stands out from other trees.

The Silk floss tree begins as a young sapling with a small bulge near the base of the trunk that slowly enlarges as it grows. But the tree tapers again upwards of the bulge, reaching a height of anywhere between 50 to 70 feet, with wide-spreading branches. The immature trees have an attractive green bark, which turns grey as the tree ages, and its girth increases. The trunk and branches are characterized by the coarse sharp conical spines that cover it, but these fall off as the tree gets older. The spines not only protect the tree from climbing animals, they are also good dew collectors; they collect the moisture from the air that the drips down to the soil below, making the tree capable of surviving even in arid conditions. In dry regions, in ancient times, the presence of the ceiba trees indicated the presence of nearby water sources, which led to the establishment of human settlements where these trees grew.

It may take many years before the trees start to flower. But when they do, it is the flowers that make this tree a show-stopper. Each one as large as an open hand, the hibiscus-like flowers are usually in different shades of mauve-pink. The five petals envelope a delicate creamy-white centre. The flowers appear after the tree has shed its leaves, and they cover the branches with a profusion of blossoms that make for a spectacular sight. The nectar attracts pollinating insects such as butterflies and bees, as well as hummingbirds in their native South America.

It takes a Ceiba tree at least seven years to mature to produce its first seed pods. These woody avocado-shaped pods were called pochote by the Mayan people. The pods grow gradually, and then crack open, exposing pea-sized black seeds surrounded by flossy white fibres.  It is this component that gives the tree its common English name Silk floss tree. In Hindi it is popularly known as resham rui (literally silk cotton). In pre-Hispanic times this fibre was important for making cloth. The floss was traditionally used for stuffing pillows and mattresses as this did not cause any allergies. In the 1940s it was also used to fill life jackets because of its buoyant properties and water resistant abilities. In the 1950’s it was used to fill automobile seats and upholstery. Over time it has been replaced by synthetic fibres.

Other parts of the tree also have multiple uses; the wood from the trunk has been used to make wood pulp; the light and flexible wood is suitable for making boxes, packing material and even canoes; while thin strips of the bark can be woven to make ropes, and the seeds pressed into edible and industrial oil. 

As in all indigenous cultures, where people lived in close connect with their surroundings, this tree is associated with its share of myths and legends in its native lands. In Argentina the tree is commonly referred to as Palo Boracho, literally ‘drunken stick’ referring to its swollen trunk that tends to lean on one side.

In Bolivia this tree is called Toborochi which means ‘tree of refuge’ or ‘sheltering tree’. A beautiful legend explains why this is so.

When the world was still very new, the Aña, or spirits of the darkness, liked to abuse and kill humans. When they found out that Araverá, the beautiful daughter of a native chief, cacique Ururuti, who had married the god Colibri (Hummingbird), was pregnant and would give birth to a son, the spirits were alerted. The spirits believed the son would punish them when he grew up, so they decided to kill Araverá. With the help of a flying seat her husband Colibrí had given to her, Araverá fled from the village, but the evil spirits followed her and harassed her wherever they found her hiding.

Finally she was so exhausted that she decided to hide in the trunk of a Toborochi tree. Sheltered within, feeling secure and at peace, she gave birth to her son. The boy grew up and fulfilled the prophecy, killing the spirits and avenging his mother. But as the gods had decreed, Araverá, could never come out of hiding, and had to stay inside the tree until she died.

But as the legend goes, while forever buried in the bulging trunk of a Toborochi, Araverá does come out, in the shape of a beautiful flower that attracts hummingbirds. And thus, she keeps contact with her husband.

While the tree is indigenous in South America it is also native to Central America, where the ceiba or yaxché, is considered as the sacred tree of the Mayas, a place to withdraw for meditation. The Mayans believed that the ceiba tree connected the different levels of the universe, from the underworld to the sky. The story is told of a mythical ceiba tree that functioned as the axis or centre of the world, encompassing the three planes of the universe: the roots are Xibalba, the underworld, the trunk and branches are Cab or the terrestrial level, and the bird Quetzal, perched on top of its canopy, the sky. Once again, reinforcing the link between the flowers and the birds. The Ceiba is thus a tree of life that plays an important part in ceremonies, art and mythology.

Though far from their native lands, the Silk floss trees which have taken roots in other parts of the world, are a majestic symbol of the ancient spirit of trees of life. And nothing is a better reminder of this than the magnificent flowering of these towering trees.  

–Mamata