Riverbank Warbler

Large songbird confined to a few scattered forests in the northern half of the North Island of New Zealand, and some offshore island sanctuaries where predator control is undertaken. Adults have a slate blue-gray body with vibrant cerulean wattles and a distinct black mask. Juvenile has smaller, pale pink wattles and a smaller face mask. Note the long downcurved tail and long legs, which help them bound around treetops with small wing flaps. Prefers not to fly but can glide for a few hundred meters when needed. Heard before seen at dawn; its unique, haunting song is composed of rich, sustained, organ-like notes. Often sings from a high perch and flaps its wings as it calls.

Large, bulky, bright-colored finch of middle to high altitude broadleaf and mixed forests. Male has a jet-black head and back and a bright yellow belly and collar. Female is olive-yellow overall with a gray head and black wingtips. Both sexes have a pale, heavy bill. Usually seen in pairs or small flocks. Often perches on exposed treetops. Gives a mellow, descending series of notes while in flight. Passingly similar in appearance to Spot-winged and White-winged Grosbeaks, but Collared Grosbeak lacks white on the wing.

Heavily streaked pipit of the Pampas bunch grass lands of central Argentina. From other pipits by densely streaked nape and auriculars, and distinctive song, but very similar to Yellowish Pipit. Song long series of radio dry notes, followed immediately by slightly slower dry notes, generally given in high fluttering flight display.