Diederik cuckoo either "cuprea" (coppery) or "capensis" (of Cape of Good Hope). The English name is an onomatopoeic rendition of its call. Diederik cuckoo The Diederik cuckoo ("Chrysococcyx caprius"), formerly dideric cuckoo or didric cuckoo, and sometimes called Diederik's cuckoo, is a member of the cuckoo order of birds, the Cuculiformes, which also includes the roadrunners and the anis. The diederik cuckoo is a smallish cuckoo at 18 to 20 cm. Adult males are glossy green above with copper-sheened areas on the back and whitish underparts. They have a broken white eye-stripe and a short, green malar stripe. All remiges have three
Pallid cuckoo 1801 as "Columba pallida" "pale pigeon". Sources differ in the genera placement of this species. It is commonly placed in "Cuculus", but genetic evidence and its song support its placement in "Cacomantis", with its closest relative the white-crowned cuckoo ("Cacomantis leucolophus"). As of 2013, ITIS still listed the genus as "Cuculus". "Pallid cuckoo" has been designated the official name by the International Ornithological Committee (IOC). Other common names include unadorned cuckoo, semitone-bird, scale-bird, and brain-fever bird—from its monotonous repetitive call. Characteristics of the appearance of the pallid cuckoo include: a dark bill, a dark eye with a gold eye-ring, a