Rufous-booted Racket-tail vs Black-throated Hermit
Ocreatus addae so với Phaethornis atrimentalis
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Black-throated Hermit |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Phaethornis atrimentalis |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 7,7 cm (3.0 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 2,8 g (0.10 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of long-tubed lowland flowers, especially Heliconia. Gleans small insects and spiders from leaf surfaces. |
| Số Trứng | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Rufous-booted Racket-tail only
Không
Black-throated Hermit only
Không
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Black-throated Hermit
Buzzy, insect-like trill with rapid modulation; high-frequency buzz sustained briefly then repeated after short pause.
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.
Black-throated Hermit
Found in Amazonian foothills of Ecuador, Peru, and far western Brazil at 200–1,200 m. Uncommon and patchily distributed.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Black-throated Hermit
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
Black-throated Hermit
Pale-tailed Barbthroat: buffy-white underparts; olive-green above; distinct pale buff supercilium; long graduated tail; slightly decurved pink-based bill
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.
Black-throated Hermit
A small hermit hummingbird (9-10 cm) found in humid lowland forests from Colombia to Peru and western Brazil. Dark throat patch contrasting with pale underparts. Nectarivore of forest undergrowth, visiting small Heliconia and Costus flowers along forest streams.