Cobalt-rumped Parrotlet (Forpus xanthopterygius) [XC613982]
by JAYRSON ARAUJO DE OLIVEIRA from Santa Rita do Novo Destino, Goi\u00e1s, Ch\u00e1cara Jayrson, Brazil (song)
Cobalt-rumped Parrotlet (Forpus xanthopterygius) [XC743987]
by Guilherme Melo from Parque Estadual Altamiro de Moura Pacheco, Goian\u00e1polis, Goi\u00e1s, Brazil (flight call)
Subspecies
Forms a superspecies with Green-rumped Parrotlet (Forpus passerinus). Commonly referred to as Blue-winged Parrotlet (Forpus xanthopterygius), which was shown in 1905 to have been applied to an immature Yellow-chevroned Parakeet (Brotogeris chiriri), but which was mistakenly reinstated in 1945 when present species was separated from Green-rumped Parrotlet (Forpus passerinus). Isolated subspecies spengeli might belong with Mexican Parrotlet (Forpus cyanopygius) of Mexico.
Proposed subspecies olallae included within nominate.
The following 6 subspecies are recognised:
spengeli (von Spix, 1824) - Northern Colombia. Considered by some authors to be a distinct species, Turquoise-winged Parrotlet (Forpus spengeli).
crassirostris (Taczanowski, 1883) - South-eastern Colombia, eastern Ecuador and northern Peru to western Brazil. Considered by some authors to be a distinct species, Large-billed Parrotlet (Forpus crassirostris).
flavescens (Salvadori, 1891) - South-eastern Peru and eastern Bolivia.