Bronze-tailed Thornbill vs Rufous-booted Racket-tail
Chalcostigma heteropogon so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | Bronze-tailed Thornbill | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Chalcostigma heteropogon | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 14,1 cm (5.6 in) | — |
| Khối Lượng | 5,65 g (0.20 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of high Andean grasslands and shrublands; visits Ericaceae and Gentianaceae blooms. Gleans tiny arthropods. | 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
Bronze-tailed Thornbill only
Rufous-booted Racket-tail only
Không
Song & Call Comparison
Bronze-tailed Thornbill
Deep, hollow churring with resonant bass; prolonged low buzzing audible at range through open forest edge.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Bronze-tailed Thornbill
Found in high Andean grassland and scrub from Venezuela through Colombia to Ecuador at 2,800–4,200 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
Bronze-tailed Thornbill
Rufous-booted Racket-tail
How to Tell Them Apart
Bronze-tailed Thornbill
Mangrove Hummingbird: tiny; males with violet gorget; metallic green above; white-spotted underparts; females green above; spotted
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
Bronze-tailed Thornbill
A small hummingbird (10-11 cm) found in Andean cloud forests and páramo edges from Venezuela to Peru at 2,500-3,800 m. Green plumage with bronze tail and purple throat (males). Nectarivore of high-altitude shrubs. The largest thornbill in the genus Chalcostigma.
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.