Blue-capped Puffleg

Common name: Blue-capped Puffleg
Scientific name: Eriocnemis glaucopoides
Clades: Heliantheini - Brilliants

The Blue-capped Puffleg is a remarkable hummingbird from central Bolivia south to northwest Argentina. It inhabits grassy and shrubby slopes at temperate elevations, often just below the treeline on the eastern slopes of the Andes. This rare species can be locally common in areas within its restricted range.

The male Blue-capped Puffleg is predominantly dark green, featuring a striking blue forehead and throat. Its tail is blue-black and forked, complemented by dark wings. One of its most distinctive features is the white “puff” of feathers around its legs, making it easily recognizable.

The female, on the other hand, has a unique appearance with pale orange underparts and metallic blue undertail coverts. Her upperparts are also dark green, similar to the male.

Despite its striking appearance, very little is currently known about the ecology and behavior of the Blue-capped Puffleg. It is generally found in humid forests and often feeds near treefalls and road cuts, particularly favoring bellflowers (Lobelioideae). It appears to be more common in the southern half of its range.

With its distinctive coloration and rare sightings, the Blue-capped Puffleg remains a mysterious and enchanting species, capturing the fascination of birdwatchers and researchers alike in the high Andes.