A large bird of lowland and foothill forest canopy, often near rivers. Somewhat variable plumage but has a long tail, bare, pink, facial skin and blue eyes. Adult, usually has a dark bill and gray-brown plumage, darker in the wing with some iridescence. Juvenile is grey with a paler head and a pink bill. Torresian and Brown-headed Crows have shorter tails. Somewhat similar to Channel-billed Cuckoo but that species has a longer bill and barring on the tail. Voice, an uncrowlike, relatively high-pitch, nasal yelping.