Hummingbirds (Trochilidae)

Black-thighed Puffleg (Eriocnemis derbyi) - HBW 5, p. 639

French: Érione de Derby German: Schwarzfeder-Höschenkolibri Spanish: Calzadito Patinegro

Taxonomy: Trochilus Derbyi DeLattre and Bourcier, 1846, Vólcan de Puracé, near Popayán, Colombia.
Closely related to E. nigrivestis and E. vestitus. Populations at northern end of range have a slightly longer bill; these were formerly regarded as race longirostris, but variation is clinal. Monotypic.

Distribution: C Andes of Colombia and NW Ecuador.