Black-bellied Hummingbird vs Rufous-booted Racket-tail
Eupherusa nigriventris compared with Ocreatus addae
Side-by-Side Comparison
| Attribute | Black-bellied Hummingbird | Rufous-booted Racket-tail |
|---|---|---|
| Scientific Name | Eupherusa nigriventris | Ocreatus addae |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Not Evaluated |
| Length | — | — |
| Wingspan | 9.4 cm (3.7 in) | — |
| Weight | 3.3200000000000003 g (0.12 oz) | 3.0 g (0.11 oz) |
| Diet | Feeds on nectar from diverse forest flowers, hovering briefly at each bloom. Takes small insects … | 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
Black-bellied Hummingbird
Soft, high-pitched twittering barely audible; delicate minute notes cascading gently near flowering canopy.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Black-bellied Hummingbird
Found in humid forests of Costa Rica and western Panama at 700-1,800 m. Resident in cloud forest undergrowth.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Conservation Status
Black-bellied Hummingbird
Rufous-booted Racket-tail
About These Birds
Black-bellied Hummingbird
A medium-sized hummingbird (9-10 cm) found in humid forests of Costa Rica and western Panama at 700-1,800 m. Males have a distinctive black belly contrasting with green breast. Nectarivore of cloud forest undergrowth and edges.
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.