Rufous-booted Racket-tail vs Green-headed Hillstar
Ocreatus addae so với Oreotrochilus stolzmanni
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Green-headed Hillstar |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Oreotrochilus stolzmanni |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 14,5 cm (5.7 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 8,016666666666667 g (0.28 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of Peruvian high puna; visits Chuquiraga and Lupinus blooms. Supplements with small flies and … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Rufous-booted Racket-tail only
Không
Green-headed Hillstar only
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Green-headed Hillstar
Soft, pure descending whistle; gentle single note curving downward smoothly, warm and musical in quiet forest.
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.
Green-headed Hillstar
Found on the western Andean slope and coastal desert hills of Peru at 1,500–3,600 m elevation.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Green-headed 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.
Green-headed Hillstar
A medium-sized hummingbird (11-12 cm) found in the Andes of Peru and Ecuador at 2,800-4,200 m. Green plumage with a glittering green hood. Nectarivore of high-altitude shrubs and Puya plants. Closely related to Andean Hillstar. Sometimes considered conspecific.