Rufous-booted Racket-tail vs Blue-chested Hummingbird
Ocreatus addae เปรียบเทียบกับ Polyerata amabilis
Side-by-Side Comparison
| คุณสมบัติ | Rufous-booted Racket-tail | Blue-chested Hummingbird |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Ocreatus addae | Polyerata amabilis |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Trochilidae | Trochilidae |
| สถานะการอนุรักษ์ | Not Evaluated | Least Concern |
| ความยาว | — | — |
| กว้างปีก | — | — |
| น้ำหนัก | 3.0 g (0.11 oz) | 4.15 g (0.15 oz) |
| อาหาร | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Feeds on nectar from diverse forest flowers, hovering briefly at each bloom. Takes small insects … |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Rufous-booted Racket-tail only
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Blue-chested Hummingbird only
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Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Blue-chested Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well through broad-leafed tropical 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.
Blue-chested Hummingbird
Found in humid lowland forests from Honduras to Ecuador. Resident in Caribbean lowland forests.
สถานะการอนุรักษ์
Rufous-booted Racket-tail
Blue-chested 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
Blue-chested Hummingbird
Andaman Coucal (alt): dark glossy brown above; rufous wings; pale below; long dark tail; red eye; Andaman island endemic
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.
Blue-chested Hummingbird
A small hummingbird (8-9 cm) found in humid lowland forests from Honduras to Ecuador. Males have a bright blue breast patch. Green plumage. Nectarivore of forest undergrowth and edges. Found primarily in Caribbean lowland forests.