Mountain Trogon (Trogon mexicanus) [XC501537]
by Richard E. Webster from Reserva de la Chara Pinta (Tufted Jay Preserve), Sinaloa, Mexico (song)
Mountain Trogon (Trogon mexicanus) [XC475006]
by Jarrod Swackhamer from Santa Catarina Ixtepeji, Oaxaca, 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.