Rufous-booted Racket-tail vs Scintillant Hummingbird
Ocreatus addae so với Selasphorus scintilla
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Scintillant Hummingbird |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Selasphorus scintilla |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 6,6 cm (2.6 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 2,188 g (0.08 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Feeds on nectar from low-elevation Costa Rican scrub flowers. Supplements diet with tiny insects and … |
| Số Trứng | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Rufous-booted Racket-tail only
Không
Scintillant Hummingbird only
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Scintillant Hummingbird
Soft, sibilant twittering with airy quality; high light notes cascading gently near flowering vegetation.
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.
Scintillant Hummingbird
Endemic to the highlands of Costa Rica and western Panama at 900-2,000 m elevation. Resident in cloud forest edges.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Scintillant 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
Scintillant Hummingbird
Red-billed Streamertail: males with glittering violet gorget; metallic green above; elongated tail streamers; red bill; females plain
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.
Scintillant Hummingbird
One of the world's smallest hummingbirds (6-7 cm). Endemic to the highlands of Costa Rica and western Panama at 900-2,000 m. Males have a flaming orange-red gorget. Nectarivore of cloud forest edges and mountain gardens. Weighs only 2-3 grams.