Two weeks ago that I looked up from the road, I saw a largish structure on my roof. Intrigued, I went up to try to figure out what this large mud structure was. I first thought it was the hive of some kind of wasp. But looking at the parapet below the nest, I noticed some bird droppings. And it did not take too much mental work from there on to figure out it was a bird’s nest.
But ‘which bird?’ was the next question. Using conventional bird books, it is not easy to go from nest to bird, I realized. And since I had not sighted the bird, I could not go through that route. I knew it was probably a swift or swallow, so I googled based on that. And kind of figured out it was a Red-rumped Swallow, but could not be quite sure till a bird-watcher friend looked at the nest and confirmed it.
I haven’t met my tenants yet, but bird books assure me that they will be 16-17 cms in length, with generous amounts of rufous-orange on their wings and underparts, and forked tails. They will feed almost entirely on flying insects, catching them on the wing, at a height of up to 100 metres or so.
The amazing ‘encroachment’ on my terrace must have been built by both adults who would have collected mud as pellets in their bills, and worked for 5-15 days to build the flask-shaped nest with a tunnel-like entrance. They would have lined it with soft grass and feathers.
I suspect the nest was built in the last mating season—between April and September, and 4-5 eggs may have been laid. They would have incubated the eggs for about 2 weeks, and the chicks would have been ready to fly out of their secure home in 26 days.
I missed all that.
But my bird-watcher friend has assured me that these birds tend to re-use their nests for a few years, so I hope to see them this spring!