Shelley's Oliveback

Otherworldly beautiful large owl. White with a variable amount of black markings; old males are the whitest, while immature females have the densest dark patterning. Breeds on the Arctic tundra and winters in northern Eurasia and North America, where it favors expansive open habitats. Often encountered on lakeshores and in coastal areas with fields, marshes, piers, and sand dunes. Irruptive, moving considerably south of the usual wintering range some years.

A distinctive ashy-gray starling with a conspicuous, bulbous pale bill and fine red flecks on the rump. Juvenile browner, with orange coloring to rump and paler bill. Highly gregarious and vocal, often observed in flocks of dozens, frequenting the canopy. A species of lowlands and hills, preferring open woodlands and forest edge, particularly favoring tall dead trees, where they nest communally in cavities. Restricted to Sulawesi and nearby islands. Vociferous, regularly uttering “chirup” calls, typically as a large, noisy group.

Common, rather large dark petrel of the Southern Ocean; regular migrant north into Humboldt Current. Usually looks wholly blackish with a pale, ivory-colored bill—the white chin is often just a few feathers and frequently is difficult to see in the field, although it can be more extensive, especially on Atlantic and Indian Ocean birds. White-chinned is obviously larger than dark-billed Sooty Shearwater and much smaller than giant-petrels, which have huge pale bills. Pale bill tip distinguishes White-chinned from similar Westland and Parkinson’s Petrels, which have dark bill tip.