[2] The International Ornithological Committee (IOC) and the Clements taxonomy recognize these 10 subspecies of collared trogon.

[2][3] BirdLife International's Handbook of the Birds of the World (HBW) recognizes eight subspecies, excluding T. c. aurantiiventris and T. c.

The breast is also metallic green with a white band separating it from the bright red belly and vent.

In South America the collared trogon inhabits humid lowland evergreen forest, both primary and well-established secondary.

[5] The collared trogon usually perches between the higher understory and the lower part of the canopy.

[5] The collared trogon eats small fruits (such as berries)[6] and invertebrates such as caterpillars, crickets, cicadas, beetles, and phasmids.

[5] The collared trogon's nesting season is highly variable across the species' wide distribution, beginning as early as November in French Guiana and as late as April in Venezuela.