Rainbow-bearded Thornbill vs Rufous-booted Racket-tail
Chalcostigma herrani so với Ocreatus addae
Side-by-Side Comparison
| Thuộc Tính | Rainbow-bearded Thornbill | Rufous-booted Racket-tail |
|---|---|---|
| Tên Khoa Học | Chalcostigma herrani | Ocreatus addae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 13,5 cm (5.3 in) | — |
| Khối Lượng | 6,183333333333334 g (0.22 oz) | 3,0 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of Colombian and Venezuelan montane scrub; visits diverse small flowers. Supplements with small insects. | 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
Không
Rainbow-bearded Thornbill only
Rufous-booted Racket-tail only
Song & Call Comparison
Rainbow-bearded Thornbill
Thin, reedy trill with wavering quality; soft rapid notes with gentle tremolo effect, given from dense cover.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Rainbow-bearded Thornbill
Found in high Andean páramo and shrubby forest edge from Colombia south to Ecuador and Peru. 2,600–4,400 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
Rainbow-bearded Thornbill
Rufous-booted Racket-tail
How to Tell Them Apart
Rainbow-bearded Thornbill
Snowcap: males with brilliant iridescent blue-violet gorget; snow-white crown; metallic green above; females green above; 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
Rainbow-bearded Thornbill
A small hummingbird (10-11 cm) found in Andean páramo from Colombia to Ecuador at 2,800-4,000 m. Males have a spectacular rainbow-colored beard of iridescent feathers ranging from green through gold to purple. Nectarivore of páramo flowering shrubs.
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.