Chestnut-headed Oropendola

Spectacular male shows diagnostic maroon sides to head and collar, iridescent metallic blue-green forehead and crown, blue shoulder, moss-green back, and yellow rump. Underside is uniform bright yellow in both sexes, although female is entirely olive above. Juvenile resembles female but with pale legs. Singles and pairs inhabit forest, shrubbery, and plantations in lowlands and lower hills, often joining mixed-species flocks. Female can be separated from female Black and Brown-throated Sunbirds by bright yellow underparts and lack of yellow eyebrow. Gives high-pitched “tzeeet” calls. Song is an undulating trill.

Small yellowish bird, very local in tropical savannas and open grassland with scattered bushes and palmetto shrubs. Usually in groups, sometimes in fairly big flocks. Feeds mainly in grasses, eating seeds, and comes to drink at small pools; often perches on roadside fences. Note the rather stubby gray bill, yellow face and underparts, and streaked back. There are no especially similar species in Mexico and Central America, but several in South America.

Tiny, with long wings and a short greenish bill with a small red base. Face and underparts are plain slaty gray on male, and buffy to whitish on female and juvenile. Adults have plain flanks and boldly barred undertail coverts. Juvenile has barred flanks; compare to similar Baillon’s Crake. Breeds in freshwater wetlands with extensive emergent vegetation, and spends the non-breeding season in a wide range of marshy habitats. Often favors deeper-water aquatic plant stands than other rails and crakes, clambering about nimbly amongst the vegetation. Usually retiring and rarely seen, but can be confiding. Males give a long song that starts with a series of “qwek” notes that eventually accelerates and tapers off; females respond with a descending trill with a similar quality.