Tres Marias Hummingbird vs Rufous-booted Racket-tail
Cynanthus lawrencei 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Tres Marias Hummingbird | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Cynanthus lawrencei | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Near Threatened | Not Evaluated |
| 体长 | — | — |
| 翼展 | 10.0 cm (3.9 in) | — |
| 体重 | 3.05 g (0.11 oz) | 3.0 g (0.11 oz) |
| 食性 | Feeds on nectar from Tres Marias Island flowers; diet supplemented with small insects and spiders … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Tres Marias Hummingbird
Pure, sustained whistle with bell-like clarity; single clear note ringing out then slowly fading in air.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Tres Marias Hummingbird
Endemic to the Tres Marías Islands off the Pacific coast of western Mexico. Resident in tropical deciduous forest.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保护状况
Tres Marias Hummingbird
Rufous-booted Racket-tail
About These Birds
Tres Marias Hummingbird
A medium-sized hummingbird (9-10 cm) endemic to the Tres Marías Islands off western Mexico. Green plumage. Recently split from Broad-billed Hummingbird. Nectarivore of tropical deciduous forest on the islands. A very range-restricted island endemic.
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.