Mountain Trogon (Trogon mexicanus) [XC813982]
by Peter Boesman from San Pablo Etla, San Pablo Etla, Oaxaca, Mexico (song)
Mountain Trogon (Trogon mexicanus) [XC501532]
by Richard E. Webster from Reserva de la Chara Pinta (Tufted Jay Preserve), Sinaloa, 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.