About Trogon violaceus J.F.Gmelin, 1788
The Guianan trogon (Trogon violaceus J.F.Gmelin, 1788) is 23 to 25 cm (9.1 to 9.8 in) long and weighs 38 to 57 g (1.3 to 2.0 oz). Males and females have very different plumage. Adult males have a violet-blue head with a black mask and throat; their bill is pale blue-gray, and their dark eye is surrounded by bare pale yellow skin. The violet-blue coloring of their head extends to the middle of their breast, where a narrow white band separates it from the bright yellow of the rest of their underparts. Their upperparts are bright metallic green, and their wings are so finely marked with black and white that they appear dark gray-brown. The upper surface of their tail is violet-blue with black feather tips; the lower surface has fine black and white bars and wide white feather tips. Adult females have a blackish culmen on their bill, and white arcs above and below the eye on their face. Their head and upperparts are dark gray, and their wings are thinly but densely barred black and white. Their belly is a duller yellow than the male's, and has a gray wash on the flanks. The underside of their tail appears barred along its sides. Juvenile males have browner wings and less white on their undertail than adult Guianan trogons. Juvenile females match the appearance of adult females. The Guianan trogon's song is a long series of rapid hollow downslurred whistles: kyu-kyu-kyu-kyu-kyu-kyu. Its calls include rolling chattering. The Guianan trogon is non-migratory. It is found in eastern Venezuela, the Guianas, and adjacent northern Brazil. It inhabits a variety of semi-open landscapes, including savanna, edges and openings of primary forest, young secondary forest, cacao and coffee plantations, and terra firme forest. In Venezuela, it ranges up to an elevation of 1,200 m (3,900 ft).
