Lesser Coucal
Centropus bengalensis
This slightly smaller-sized and shorter-billed coucal has a very long hind claw, the longest within the genus. The overall plumage, as in many other coucals, is of a blackish bird with a long tail and rufous wings. They have two plumages, a breeding plumage in which the head and upper back are glossy with dark shafts to the feather and a duller non-breeding plumage in which the feather shafts on the head and back are whitish. The wing coverts also have pale shafts showing as whitish streaks on the brown feathers. The central upper tail coverts are barred and very long.
ID text from Wikipedia, CC BY-SA 4.0

White-browed Coucal
Centropus superciliosus
The white-browed coucal is a medium-sized species growing to 36 to 42 cm (14 to 17 in) in length. The sexes are similar, adults having a blackish crown and nape, a white supercilium, rufous-brown back, chestnut wings, blackish rump and black tail, glossed with green, with a white tip. The underparts are creamy-white, the eyes red, the beak black, and the legs and feet greyish-black or black. Juveniles have rufous streaking on the crown, a faint buff supercilium, barred upper parts and darker underparts.
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Lesser Coucal and White-browed Coucal.