The nightjars help to swell the nocturnal chorus. There are seven or eight different species in India, but of these only three are commonly heard and two of them occur mainly in forest tracts. The call of the most widely-distributed of the Indian goatsuckers--_Caprimulgus asiaticus_, the common Indian nightjar--is like unto the sound made by a stone skimming over ice. Horsfield's goatsucker is a very vociferous bird. From March till June it is heard wherever there are forests. As soon as the shadows of the evening begin to steal across the sky its loud _chuk_, _chuk_, _chuk_, _chuk_, _chuk_ cleaves the air for minutes together. This call to some extent replaces by night the _tonk_, _tonk_, _tonk_ of the coppersmith, which is uttered so persistently in the day-time. In addition to this note Horsfield's nightjar emits a low soft _chur_, _chur_, _chur_. The third nightjar, which also is confined chiefly to forest tracts, is known as Franklin's nightjar (_C. monticolus_). This utters a harsh _tweet_ which at a distance might pass for the chirp of a canary with a sore throat. Other sounds heard at night-time are the plaintive _did-he-do-it pity-to-do-it_ of the red-wattled lapwing (_Sarcogrammus indicus_), and the shrill calls of other plovers. As has already been said, the nesting season is at its height in May. With the exception of the paroquets, spotted owlets, nuthatches, black vultures and pied kingfishers, which have completed nesting operations for the year, and the golden-backed woodpeckers and the cliff-swallows, which have reared up their first broods, the great majority of the birds mentioned as having nests or young in March or April are still busily occupied with domestic cares. May marks the close of the usual breeding season for the jungle crows, skylarks, crested larks, finch-larks, wood-shrikes, yellow-throated sparrows, sand-martins, pied wagtails, green barbets, coppersmiths, rollers, green bee-eaters, white-breasted kingfishers, scavenger vultures, tawny eagles, kites, shikras, spur-winged plovers, little ringed plovers, pied woodpeckers, night herons and pied chats. In the case of the tree-pies, cuckoo-shrikes, seven sisters, bank-mynas and blue-tailed bee-eaters the nesting season is now at its height. All the following birds are likely to have either eggs or nestlings in May: the white-eyes, ioras, bulbuls, tailor-birds, shrikes, brown rock-chats, Indian robins, magpie-robins, sunbirds, swifts, nightjars, white-eyed buzzards, hoopoes, green pigeons, blue rock-pigeons, doves, sparrows, the red and yellow wattled lapwings, minivets, wire-tailed swallows, red-headed merlins, fantail flycatchers, pipits, sand-grouse and grey partridges. The nests of most of these have been described already.