Rufous-backed Thrush (Turdus rufopalliatus) [XC649585]
by Richard E. Webster from Coyoac\u00e1n (near Ciudad de M\u00e9xico), Ciudad de M\u00e9xico, Mexico (song)
Rufous-backed Thrush (Turdus rufopalliatus) [XC504449]
by Richard E. Webster from Minas Nuevas, \u00c1lamos, Sonora, Mexico (song)
Subspecies
Rufous-backed Thrush (Turdus rufopalliatus) and Grayson's Thrush (Turdus graysoni) (Sibley and Monroe 1990, 1993) have been lumped into Turdus rufopalliatus following AOU (1998).
Subspecies graysoni has been treated as a separate species, but appears to represent a typical case of colour loss in an insular form of a continental species; in absence of vocal data, separation considered unwarranted.
graysoni (Ridgway, 1882) - Tres Marías Is (off western Mexico). Considered by some authors to be a distinct species, Grayson's Thrush (Turdus graysoni).