Rufous-booted Racket-tail vs Sooty Barbthroat
Ocreatus addae 비교 대상 Threnetes niger
Side-by-Side Comparison
| 속성 | Rufous-booted Racket-tail | Sooty Barbthroat |
|---|---|---|
| 학명 | Ocreatus addae | Threnetes niger |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Not Evaluated | Least Concern |
| 체장 | — | — |
| 날개 폭 | — | 11.8 cm (4.6 in) |
| 체중 | 3.0 g (0.11 oz) | 5.8 g (0.20 oz) |
| 식성 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Primarily nectarivore visiting tubular flowers; supplements diet with small insects and spiders for protein. |
| 산란 수 | 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.
Sooty Barbthroat
Melodic, descending whistle with rich timbre; smooth pure tone dropping gracefully through several semitones then fading.
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.
Sooty Barbthroat
Found in a restricted range in northeastern Brazil and adjacent French Guiana. Resident in coastal rainforest. Rare and locally distributed.
보전 상태
Rufous-booted Racket-tail
Sooty Barbthroat
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
Sooty Barbthroat
Dark sooty-brown and green upperparts; sooty-dark throat and breast; belly pale grey-buff; tail dark with pale tip; Guiana region endemic; distinctly darker and sootier below than other barbthroats with heavily …
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.
Sooty Barbthroat
소사레이지느러미벌새는 아마존 유역과 기아나 지방의 열대 저지대에 서식하는 소형 벌새입니다. 어두운 녹색 깃털과 붉은 부리가 특징이며, 숲 내부 그늘진 하층에서 주로 꿀을 섭취합니다.