Rufous-booted Racket-tail vs Oasis Hummingbird
Ocreatus addae so với Rhodopis vesper
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Oasis Hummingbird |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Rhodopis vesper |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 11,1 cm (4.4 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 4,08 g (0.14 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of Peruvian coastal desert oases; visits Capparis, Tillandsia, and garden flowers. Supplements with small … |
| 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.
Oasis Hummingbird
Soft, pure whistle with warm timbre; gentle sustained tone with slight fall at end, given quietly. Vocalization pattern typical of this species in its native habitat.
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.
Oasis Hummingbird
Found in coastal fog valleys and desert oases of Peru and northern Chile. Sea level to 3,200 m. Highly restricted lowland range.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Oasis Hummingbird
How to Tell Them Apart
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
Oasis Hummingbird
Lazuline Sabrewing: tiny; males with brilliant lazuline blue gorget; metallic green above; white underparts; females plain green; spots
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.
Oasis Hummingbird
A small hummingbird (12-13 cm including long tail) found in the arid coastal deserts of Peru and northern Chile. Dull plumage with a long, forked tail. Nectarivore specializing in desert flowers and columnar cacti. One of the few hummingbirds adapted to hyper-arid environments.