About Leucochloris albicollis (Vieillot, 1818)
The white-throated hummingbird (Leucochloris albicollis) is 10 to 11.5 cm (3.9 to 4.5 in) long. Males weigh 5 to 8 g (0.18 to 0.28 oz), and females weigh about 4.5 g (0.16 oz). Adults have a medium-length, straight bill with a blackish maxilla and a red mandible with a black tip. Adult males have golden- to bronze-green upperparts. Their uppertail coverts and inner tail feathers are golden-green to brilliant green, while the outer tail feathers are blackish green with white bands near the end. Male chin feathers are brilliant green with white edges, the throat is white, and the cheeks and breast are brilliant green to golden-green. The center of the belly is white, with golden- to bronze-green sides and flanks. Undertail coverts are white with some bronze-green to brownish inclusions. Adult females are very similar to males but are overall duller and less glittery. Juveniles have grayish brown underparts with less white, and brownish tips on their tail feathers. The white-throated hummingbird is found in eastern Paraguay, southeastern Brazil from Minas Gerais and Espírito Santo south, Uruguay, and northeastern Argentina. It inhabits semi-open to open landscapes, including edges of mature forest, marshes, scrublands, parks, and gardens. It is generally found from near sea level up to 1,000 m (3,300 ft) in elevation, though there are occasional records from higher elevations, including one at 2,100 m (6,900 ft).
