White-crested Guan

Medium-sized honeyeater found in woodlands and rocky areas across northern inland Australia. Olive brown above, yellow with diffuse gray streaking below, with gray crown and dark gray cheek patch bordered in yellow, and entirely black bill during breeding season. Base of lower mandible (and adjacent gape) yellow in nonbreeding season. Calls include a variety of chirruping rolling whistles, a loud single squawk, and short yelps.

Fairly small, dark swift found in lowlands and foothills throughout much of northern South America. Shape is distinctive compared with other Chaetura swifts: look for broad wings that bulge along the trailing edge and appear pinched in at the base, accentuating the short, square tail. Fairly common. Often occurs in loose flocks that forage over forests, rivers, and adjacent open areas.

A brown, tree-climbing bird with a strongly curved bill. Appears small-headed; plumage is mostly rufous-brown with buffy streaking on head and neck. Found in tall rainforest, where it is uncommon and locally distributed; often occurs in areas with extensive bamboo thickets. Generally shy and rather difficult to observe. Forages at middle and upper levels, using extraordinary bill to probe into deep bark crevices, bromeliads, and broken bamboo stems. Regularly follows mixed-species flocks. Song is a fast, rich trill, rising and falling slightly in pitch, often preceded by a longer overslurred note. Curved bill should immediately distinguish this species from other woodcreepers in range. Occurs in central Amazonia, south of the Amazon River, between the Madeira and Xingu Rivers.