Buff-tailed Coronet vs Rufous-booted Racket-tail
Boissonneaua flavescens so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | Buff-tailed Coronet | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Boissonneaua flavescens | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 15,0 cm (5.9 in) | — |
| Khối Lượng | 8,033333333333333 g (0.28 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of Andean cloud forest; visits Ericaceae and Fuchsia blooms. Aggressively defends territories; gleans small … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Buff-tailed Coronet
Soft, pure descending whistle; gentle note curving downward smoothly, warm and musical in cloud forest quiet.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Buff-tailed Coronet
Found in Andean cloud forests from Venezuela south through Colombia, Ecuador, and Peru to Bolivia. 1,600–3,000 m.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Tình Trạng Bảo Tồn
Buff-tailed Coronet
Rufous-booted Racket-tail
How to Tell Them Apart
Buff-tailed Coronet
White-bearded Helmetcrest: males with glittering blue-violet gorget; metallic green; white beard; white leg puffs; females plain green
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
About These Birds
Buff-tailed Coronet
A medium-sized hummingbird (11-12 cm) found in Andean cloud forests from Venezuela to Peru at 1,500-3,000 m. Green plumage with a buff-orange tail. Nectarivore of montane forest and edges. Named coronet for the green iridescence on the crown.
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.