The common hawk cuckoo of India and Sri Lanka, which has a monotonous and maddeningly persistent call.
南亚鹰鹃（产于印度和斯里兰卡的一种鹰鹃鸟，常久鸣不休）
Cuculus varius, family Cuculidae
Example sentencesExamples
The same could be said of the caged brainfever bird which Maya tries to set free.
There are more than 216 bird species in Mudumalai, and over a period of several hours I spotted a wealth of fowl, including hoopoes, magpie and Indian robins, sunbirds, brainfever birds, and cuckoos.
One's a Koel, calls repetitively, day and night: the pukka representatives of the raj called it the brainfever bird.
So far I have seen wagtails, brahminy kites, shikras (a small hawk), the hawk cuckoo also known as the brainfever bird, green bee-eaters, metallic blue kingfishers, redwhiskered bulbuls, hoopoes and, last but not least, the Indian great horned owl.
In other birds, e.g. partridge, shikra, brainfever bird, rosy starling, etc., a succession of rapid wing-beats is followed by a short glide on outstretched motionless wings - - free wheeling - in which the bird does not lose height.