Mountain Trogon (Trogon mexicanus) [XC335088]
by Frank Lambert from Campamento El Triunfo, Chiapas, Mexico (song)
Mountain Trogon (Trogon mexicanus) [XC351723]
by Richard E. Webster from NE slope Volcan de Fuego, Jalisco, Mexico (song)
Subspecies
Possibly most closely related to Elegant Trogon (Trogon elegans), Collared Trogon (Trogon collaris), Masked Trogon (Trogon personatus), Black-throated Trogon (Trogon rufus) and Blue-crowned Trogon (Trogon curucui). Birds from Honduras sometimes separated as subspecies lutescens, but apparently indistinguishable from nominate.
The following 3 subspecies are recognised:
clarus Griscom, 1932 - North-western Mexico.
mexicanus Swainson, 1827 - Western, eastern and southern Mexico, southern Guatemala, southern Honduras and northern El Salvador.
lutescens Griscom, 1932 - Highlands of El Salvador and Honduras.