Buff-rumped Warbler (Myiothlypis fulvicauda) [XC355602]
by Kent Livezey from Torti, San Francisco Nature Reserve, Panama, Panama (song)
Buff-rumped Warbler (Myiothlypis fulvicauda) [XC781260]
by Leonardo Ord\u00f3\u00f1ez-Delgado from Sinop, MT 423 Rio de Maria, Mato Grosso, Brazil (call, song)
Subspecies
Often placed together with Flavescent Warbler (Myiothlypis flaveola), White-rimmed Warbler (Myiothlypis leucoblephara), White-striped Warbler (Myiothlypis leucophrys) and Southern Riverbank Warbler (Myiothlypis rivularis) in a separate genus, Phaeothlypis. Forms a superspecies with Southern Riverbank Warbler (Myiothlypis rivularis) and sometimes considered conspecific, but songs differ and it seems likely that obvious buff rump and tail of present species (which is continuously signalled) would prevent interbreeding should the two ever come into contact.
The following 7 subspecies are recognised:
leucopygius (Spix, 1825) - North-central Honduras south to Caribbean slope of western Panama.
veraguensis (Sharpe, 1885) - Pacific slope from south-western Costa Rica south to central Panama.
semicervina P. L. Sclater, 1860 - Eastern Panama and adjacent western Colombia southern in western Andes foothills to north-western Peru.
motacilla (Miller, AH, 1952) - Upper Magdalena Valley, in Colombia.
fulvicauda (Spix, 1825) - Western Amazonian Basin in south-eastern Colombia, eastern Ecuador, north-eastern Peru, western Brazil and northern Bolivia.
significans (Zimmer, JT, 1949) - Amazonian Basin in south-eastern Peru.
leucopygia (Sclater, PL & Salvin, 1873) - Tropical north-central Honduras to western Panama (Veraguas).
BirdLife International Species Factsheet