Dwarf Vireo (Vireo nelsoni) [XC351116]
by Al\u00e1n Palacios from Carretera 175\/Tuxtepec-Oaxaca--Km 200-205, Oaxaca, Mexico (song)
Dwarf Vireo (Vireo nelsoni) [XC735844]
by id from Tlalixtac de Cabrera, Tlalixtac de Cabrera, Oaxaca, Mexico (song)
Subspecies
No subspecies.
Initially named as Vireo nanus, but that name invalid, as preoccupied. Probably most closely related to, and has been thought to form a superspecies or to be conspecific with, Black-capped Vireo (Vireo atricapilla).