A hidden koel

On a sunny winter morning by lake Lakhota in the middle of Jamnagar, I tore myself away from the many ducks swimming in the lake to look at where The Family was pointing. A female Asian koel (Eudynamys scolopaceus) was hopping about the branches of a young banyan tree. This is always something of a sight; the bird, especially the female, is hard to spot. The male’s storied plaintive mating call is a staple of the late spring, redolent of ripe mangoes and burning hot days. Sometimes I’m woken up on such hot mornings by a duet of two males each trying to outdo the other. I can’t imagine a better way of waking up.

I watched the female hopping about in the lower branches of the tree, not paying us much attention. The male is slaty black with the same red iris. Sexual dimorphism in birds always says that the involvement of the two parents in breeding and brooding is very different. The koel is a brood parasite, laying its eggs in the nests of a variety of species: crows, common myna, black drongos, and the Eurasian magpie. The male is seldom involved in distracting the nesting pair while the female lays eggs. The female occasionally feeds the young, but most of the feeding and rearing is left to the parasitized pair.

I look a shot of the fruits of the banyan tree (Ficus benghalensis). As a boy I’ve tried eating them. They are sweet, and did not cause me any obvious harm, but I’ve never seen them being sold in any market. Later, when I moved to a part of the country where figs are common, I realized that the odd interior is typical of fruits of the genus Ficus. I was sure that the bird was here to eat the fruits. They looked pretty ripe to me.

As I saw the bird eating the fruits, I began to wonder whether it is an entirely fruit eating bird (obligate fructivore) or whether it eats grubs and insects also. If it lays eggs in the nests of crows and drongos, then the chick is definitely fed a large variety of insects and scavenged meat. In agreement with this I found a rare report of courtship feeding in which a male koel was observed to offer a caterpillar to a female. Even a single koel is so hard to spot, seeing a courtship feeding is quite unusual. I wouldn’t mind being lucky enough to see this one day. Must keep my eyes peeled in spring.