Rufous-booted Racket-tail vs White-sided Hillstar
Ocreatus addae so với Oreotrochilus leucopleurus
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | White-sided Hillstar |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Oreotrochilus leucopleurus |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 13,6 cm (5.4 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 6,6 g (0.23 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore foraging above treeline at sparse Ericaceae and Chuquiraga patches. Supplements with small arthropods. |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
White-sided Hillstar
Melodic, ascending phrase with hopeful character; smooth pure tones rising steadily in clear musical progression at dawn.
Geographic Range & Migration
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
White-sided Hillstar
Found in the Andes and Patagonian steppe of Argentina and Chile from 1,000–4,000 m. Partly migratory.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
White-sided Hillstar
About These Birds
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.
White-sided Hillstar
A medium-sized hummingbird (12-13 cm) found in the southern Andes from Bolivia to Argentina at 2,500-4,500 m. Green plumage with white flanks. Nectarivore of puna grasslands and rocky slopes. Enters torpor nightly to survive cold Andean nights. Southern Andean near-endemic.