Blue-throated Mountain-gem vs Rufous-booted Racket-tail
Lampornis clemenciae so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | Blue-throated Mountain-gem | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Lampornis clemenciae | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 14,7 cm (5.8 in) | — |
| Khối Lượng | 7,25 g (0.26 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of US and Mexican highland forest; visits diverse flowers at medium to high elevation. … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Blue-throated Mountain-gem only
Không
Rufous-booted Racket-tail only
Không
Song & Call Comparison
Blue-throated Mountain-gem
Rough, nasal chatter with emphatic delivery; series of coarse buzzy notes audible from considerable distance.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Blue-throated Mountain-gem
Found from the mountains of southern Arizona south through Mexico to Honduras in pine-oak forest. 1,400–3,500 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
Blue-throated Mountain-gem
Rufous-booted Racket-tail
How to Tell Them Apart
Blue-throated Mountain-gem
Calliope Hummingbird (alt): males with iridescent blue gorget; metallic green body; white pectoral tufts; females green; spotted below
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
Blue-throated Mountain-gem
A large hummingbird (12-13 cm) found in mountain canyons of the southwestern United States and Mexico. Males have a brilliant blue throat gorget. The largest hummingbird breeding in the US. Nectarivore of mountain meadows and garden feeders. Known for its loud, squeaky call.
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.