Square-tailed Bulbul

Scarce and local in the Andean foothills of extreme northern Chile, but widespread in much of southern South America. Favors brushy hedgerows and scrubby thickets, usually in villages and around agricultural terraces. Sexes look similar and bold face pattern is distinctive, in combination with big orange bill. Juvenile has a dusky bill and duller face pattern, but soon attains adult appearance. Loud bright song can draw attention, but often sings from a concealed perch.

A large, long-winged, entirely gray-brown swiftlet with a very shallow tail fork and a gliding flight action. Found over a variety of habitats, often in flocks with other swiftlets. Almost always seen in flight. Widespread, so overlaps with multiple similar swiftlets. Uniform Swiftlet is larger and longer-winged than Glossy, Cave, and Bornean Swiftlets, with a dark belly and a non-fluttering flight action. Uniform Swiftlet lacks the clear pale rump of White-rumped, Seram, Halmahera, Sulawesi, and some Glossy Swiftlets, and is larger than those species. Uniform lacks gloss on upperparts, unlike Mayr’s, Mountain, and Glossy Swiftlets. It is smaller than Bare-legged, Mayr’s, Papuan, Volcano, and Giant Swiftlets. It is most similar to Edible-nest and Black-nest Swiftlets, but Uniform is darker beneath, and lacks the slightly paler rump of Edible-nest; it is best distinguished from those species by its mossy nest. 

A large, long-tailed, thick-billed bird, entirely dark bluish-black, with pale skin around a red eye. Found in most habitats, most commonly in old-growth lowland forest. Often flushed from trackside vegetation. Otherwise inconspicuous, but regularly feeds on the ground. Similar in appearance to Pacific Koel, but significantly larger, with a dark gray instead of ivory-colored bill. Unlikely to be confused. Vocally similar to other coucals, most commonly giving a confused series of hollow booming and barking notes.