Eriocnemis derbyi (Black-thighed Puffleg)
Eriocnemis derbyi (Delattre & Bourcier, 1846)
8-9 cm Metallic green above, more coppery on the rump, uppertail coverts iridescent green. Golden green below, with more iridescent green crissum and small black leg puffs. Tail very short, quite forked and with pointed tips. Female similar but with dense green and whitish mottling on all the…
