Rufous-booted Racket-tail vs Calliope Hummingbird
Ocreatus addae so với Selasphorus calliope
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Calliope Hummingbird |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Selasphorus calliope |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 8,3 cm (3.3 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 2,7633333333333336 g (0.10 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Smallest breeding bird in North America; feeds on mountain meadow nectar and supplements with small … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Calliope Hummingbird
Rough, coarse chatter with energetic delivery; rapid series of harsh notes tumbling quickly in vigorous exchange.
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.
Calliope Hummingbird
Breeds in mountain meadows of western North America from British Columbia to Utah. Long-distance migrant wintering in Mexico.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Calliope 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
Calliope Hummingbird
Violet-crowned Woodnymph: males with iridescent violet crown and gorget; metallic green above; females green above; spotted below
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.
Calliope Hummingbird
A tiny hummingbird (7-8 cm), the smallest breeding bird in the United States. Males have an iridescent magenta-pink gorget. Breeds in mountain meadows of the western US and Canada. Long-distance migrant to Mexico. Named for its resemblance to the beautiful Calliope of Greek mythology.