places T. c. exoptatus in Trinidad & Tobago; the IOC places T. c. collaris there instead. In South America the collared trogon inhabits humid lowland evergreen forest, both primary and well-established secondary. In Mexico and Central America it inhabits those forest types and in addition humid montane, semideciduous, and pine-evergreen forests. It is found as high as in Mexico and in Costa Rica, but in the Andes it is mostly below in Ecuador and in Peru. Behavior The collared trogon usually perches between the higher understory and the lower part of the canopy. It is usually seen singly or in pairs, but small groups may gather outside the breeding season. Feeding The collared trogon eats small fruits (such as berries) and invertebrates such as caterpillars, crickets, cicadas, beetles, and phasmids. They often accompany the edges of mixed-species foraging flocks but do not mix with the other members. Breeding 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. It nests in cavities in decaying wood or arboreal termite nests; the cavity is often so shallow that much of the bird is visible. The normal clutch size is two eggs. Both sexes incubate the eggs and care for the young. Vocalization The collared trogon's song varies geographically. The Mexican and Central American populations sing "a plaintive 2-3 noted kyow'-kyow or caow' caow, and a faster kyow kyow-kyow". South American songs are described as "a series of mellow whistled notes, usually with a stuttered introductory note: whi'whi whew-whew-whew." Calls include "a prolonged charr" and a "snorting chur-r-r-r". Status The IUCN has assessed the collared trogon as being of Least Concern. It has a very large, though not quantified, population and a very large range. References External links Further reading collared trogon Birds of Central America Birds of Colombia Birds of Venezuela Birds of Ecuador Birds of the Caribbean Birds of Trinidad and Tobago Birds of the Amazon Basin collared trogon collared trogon