Black-thighed Puffleg

Eriocnemis derbyi

Scintillating hummingbird of the high Andes of Colombia and far northern Ecuador (it does not reach the Quito area). Male is dark glittering-green (with brighter rump and vent) and has inconspicuous black leg puffs. Female is brighter green with small white leg puffs, blue forehead, and white scaling on throat and breast. Typically seen feeding at the edge of elfin forest or in scrubby ravines.

Identification

The black-thighed puffleg is about 10 cm (3.9 in) long. It has a straight blackish bill. Males are mostly shining golden green overall, sometimes with black highlights, and has glittering malachite green upper- and undertail coverts. Their leg puffs are black and the tail is forked and black. Females are similar but have white underparts with green spots, and their leg puffs are a mix of black and grayish white. The female also has a blue tinge to the forehead. Juveniles resemble females.

Taxonomy

The black-thighed puffleg is monotypic though at one time it was thought to have two subspecies.

Scientific name
Eriocnemis derbyi
Authority
(Delattre & Bourcier, 1846)
Order
Apodiformes
Family
Trochilidae
Genus
Eriocnemis

Range and habitat

The black-thighed puffleg is found in the Central Andes of Colombia from Tolima Department and south to Imbabura Province in northwestern Ecuador. It inhabits bushy pastures and the edges of humid forest, and in Colombia has also been recorded in shrubby ravines. It prefers somewhat open landscapes. In elevation it ranges from 2,500 to 3,600 m (8,200 to 11,800 ft) and is most common above 2,900 m (9,500 ft).

Migration
Vertical migration

Behavior

Migration pattern: Vertical migration.

Conservation

Population trend: stable.

Population trend
stable

Photos

Distribution

Bird Calls

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