Guianan Violaceous Trogon

The Guianan trogon 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 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 so finely marked with black and white that they appear dark gray-brown. Their tail's upper surface is violet-blue with black tips to the feathers; the lower surface has fine black and white bars and wide white tips to the feathers. Adult females' bills have a blackish culmen and the face has white arcs above and below the eye. 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 on its sides. Juvenile males have browner wings and less white on their undertail than adults. Juvenile females are like the adult. The Guinan 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 Trinidad, eastern Venezuela, the Guianas, and adjacent northern Brazil. It inhabits a variety of semi-open landscapes such as savanna, the edges and openings of primary forest, young secondary forest, cacao and coffee plantations, and terra firme forest. It ranges as high as 1,200 m (3,900 ft) in Venezuela.

The Guianan trogon's diet is fruit and arthropods that it collects while hovering after short sallies from a perch. It often joins mixed-species foraging flocks.