Citron-crested Cockatoo

Fairly dull vireo, intermediate between Blue-headed and Plumbeous. Grayish-olive overall, but with yellowish flanks and greenish back. Note white spectacles contrasting with gray head and two whitish wingbars. Breeds in mixed coniferous forests, especially in mountainous areas; winters in Mexico. Often separable from Blue-headed and Plumbeous Vireos by range, but can overlap during migration and winter. Cassin's is less contrasty than Blue-headed, especially between the gray face and whitish throat, and the greenish back blends into the nape and crown. Some birds are best left unidentified.

Dull sparrow lacking distinctive patterns. Found in grasslands with scattered bushes. Generally grayish-brown with barely noticeable blurry streaks on breast and sides, thin white eyering, and pale edges on wing feathers. Back is patterned with rufous and black. Very diffuse head pattern. Most similar to Botteri's Sparrow; where range overlaps, look for Cassin's smaller bill, thin white eyering, and voice. Gives a pleasant musical song; a few varied notes followed by four whistles on different pitches "see-soo, see-say."

Small, dirt-colored dove of desert lowlands, where it is often common in towns, parks, farmland, and semiopen areas in general. In pairs or small groups; feeds on the ground but often perches on wires. Flight is rather fast and direct, and usually low. Readily identified by diagnostic bright orange base on a rather stout (for a dove) bill. Male has more blue-gray tones than pinkish female. Call is a distinctive wet quacking or farting sound (not a croak), usually given in short series.