Buff-thighed Puffleg (Haplophaedia assimilis) [XC73613]
by Nick Athanas from Apa-Apa, La Paz, BO, Bolivia (song)
Buff-thighed Puffleg (Haplophaedia assimilis) [XC43903]
by Andrew Spencer from Urpuma, Sandillani, PNN Cotapata, La Paz, Bolivia (call)
Subspecies
Genus sometimes merged into Eriocnemis. Also considered to be close to Urosticte and Ocreatus. May form superspecies with Greenish Puffleg (Haplophaedia aureliae) and they are usually considered conspecific, but plumage differences, together with disjunct distributions, support their treatment as separate species.
The following 2 subspecies are recognised:
affinis (Taczanowski, 1884) - Eastern Andes of northern and central Peru.
assimilis (Elliot, 1876) - Southern Peru and north-western Bolivia.