Blue-capped Puffleg vs Rufous-booted Racket-tail
Eriocnemis glaucopoides compared with Ocreatus addae
Side-by-Side Comparison
| Attribute | Blue-capped Puffleg | Rufous-booted Racket-tail |
|---|---|---|
| Scientific Name | Eriocnemis glaucopoides | Ocreatus addae |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Not Evaluated |
| Length | — | — |
| Wingspan | 10.1 cm (4.0 in) | — |
| Weight | 3.75 g (0.13 oz) | 3.0 g (0.11 oz) |
| Diet | Nectarivore of Colombian Andes; fluffy leg tufts show during hover at Ericaceae blooms. Gleans small … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Clutch Size | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Blue-capped Puffleg
Buzzy, high-pitched trill barely audible; rapid soft vibration with insect-like quality during hovering near blossoms.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Blue-capped Puffleg
Endemic to Argentina and adjacent Bolivia in high Andean scrub and puna at 2,600–4,200 m elevation.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Conservation Status
Blue-capped Puffleg
Rufous-booted Racket-tail
About These Birds
Blue-capped Puffleg
A small hummingbird (10-11 cm) found in Andean cloud forests from Bolivia to northwestern Argentina at 2,000-3,500 m. Green plumage with blue crown and white leg puffs. Nectarivore of montane forest and cloud forest edges. The southernmost puffleg species.
Rufous-booted Racket-tail
A small hummingbird (8-10 cm plus tail rackets) found in Andean cloud forests of southeastern Peru and Bolivia at 1,200-2,200 m. Males have rufous leg puffs instead of white. Recently split from Booted Racket-tail. Nectarivore of montane forest undergrowth.