Yellow-crowned Euphonia

The male is a striking, medium-sized, mostly dark bustard with a bold white cheek patch and a reddish bill. The female has a black belly and is elsewhere finely barred. In flight it has a conspicuous white window on both the upper and lower sides of the wing. Scattered individuals, sometimes associated in small groups, inhabit arid savanna and Karoo scrub. It singscalls a strident, ratcheting “kraak-kraak-kraak” which leads into a maniacal “raa-cha-ka-ka-ka....cha-ka-ka-ka” display as the male flies around 20–30 m above the ground, with legs dangling. In flight, Black Bustard’s lack of large white wing patches separates it from the similar White-quilled Bustard.

Small black-and-white storm petrel. Note distinctive sooty black upperparts and white belly and rump. Breeds across the South Pacific, South Atlantic, and South Indian Oceans, migrating north into tropics after breeding. Can be seen pattering its feet on the surface of the water when feeding for small squid and crustaceans on the surface. Distinguished from other storm-petrels by shorter legs that extend to the end of or just beyond the tail in flight, as well as by lacking the smudgy black stripe that cuts down the belly of the Black-bellied Storm-Petrel.

A medium-sized, short-tailed sparrow. Extensive plumage variation across range, but always streaky. Usually shows distinctive yellow patch in front of eye, but this can be indistinct or absent on some individuals. Some populations in California and Baja have larger bills and more muted gray streaking; others are very dark and boldly streaked. “Ipswich” Sparrow on the Atlantic Coast is paler with unique buffy-pinkish tones. Almost always found in open areas, from meadows and hayfields to tundra and coastal dunes. Tends to be found in more open habitats than Song Sparrow; also smaller and shorter-tailed.