Viridian Metaltail vs Rufous-booted Racket-tail
Metallura williami so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | Viridian Metaltail | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Metallura williami | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 11,5 cm (4.5 in) | — |
| Khối Lượng | 4,6 g (0.16 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of Ecuadorian and Colombian montane shrubs; visits Brachyotum and Ericaceae. Gleans tiny insects from … | 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
Viridian Metaltail only
Rufous-booted Racket-tail only
Không
Song & Call Comparison
Viridian Metaltail
Sharp, emphatic chip repeated rapidly; clean staccato note with forceful attack given insistently near territory.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Viridian Metaltail
Found in cloud forests and páramo of Colombia and Ecuador on both Andean slopes. 2,400–4,000 m elevation.
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
Viridian Metaltail
Rufous-booted Racket-tail
How to Tell Them Apart
Viridian Metaltail
Blue-throated Mountain-gem: tiny; males with brilliant blue gorget; metallic green above; white underparts; females green above; spots
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
Viridian Metaltail
A small hummingbird (9-10 cm) found in Andean cloud forests from Colombia to Ecuador at 2,000-3,500 m. Males have a glittering green tail. Nectarivore of montane forest edges and flowering shrubs. Named after the British naturalist M.C. William.
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.