River Tern

A drab Galápagos finch with a stretched-out-looking bill. It has tan upperparts and pale whitish or yellowish underparts that may have a small amount of streaking. A small number of birds on San Cristóbal have dark hoods. Stout and elongated bill is pure black on breeding male, partly black on non-breeding male, and pale orange on female. Best identified by bill shape and behavior. It creeps along branches peering around for and probing into cavities, and it sometimes taps like a woodpecker. One of very few tool-using animals, it uses twigs and thorns to extract prey from holes in branches. Found on most islands but absent from Española, Genovesa, Marchena, Pinta, Darwin, and Wolf.

Stunning, ornately-colored toucan of high Andean cloud forest. While the general plumage pattern is similar to other mountain-toucans, the multicolored coral, black, and yellow-striped bill separates it from all others. Eye is yellow in most of Peru, dark elsewhere in its range. Typically encountered in pairs or small groups that forage in the forest canopy. Often noisy, giving long, rising screams or short, excited yaps.

A medium-sized pigeon of lowland and foothill forest canopy, with green underparts, head, and rump, a gray crown, yellow wingbars and edges to the flight feathers, a whitish belly, and white under the base of the tail. Note the whitish bill with a reddish base and the blue eyes. Male has a maroon shoulder and back, where the female is green. Similar to Thick-billed Green-Pigeon, but Philippine has a thinner bill and lacks the green skin around the eye. Female resembles female Pink-necked Green-Pigeon, but that species has yellow marks only on the edge of the wing. Voice is typical of green-pigeons, including a rising-and-falling out-of-tune whistled song.