Rufous-booted Racket-tail vs Green-crowned Plovercrest
Ocreatus addae 对比 Stephanoxis lalandi
Side-by-Side Comparison
| 属性 | Rufous-booted Racket-tail | Green-crowned Plovercrest |
|---|---|---|
| 学名 | Ocreatus addae | Stephanoxis lalandi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Not Evaluated | Least Concern |
| 体长 | — | — |
| 翼展 | — | 9.6 cm (3.8 in) |
| 体重 | 3.0 g (0.11 oz) | 3.15 g (0.11 oz) |
| 食性 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of Atlantic Forest in Brazil, probing at Lobelia and bromeliads. Supplements diet with small … |
| 产卵数 | 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.
Green-crowned Plovercrest
Deep, hollow churring resonant trill; prolonged low buzzing sound vibrating through dense tropical riparian forest.
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.
Green-crowned Plovercrest
Found in southeastern Brazil, eastern Paraguay, and northeastern Argentina. Resident in Atlantic Forest and cerrado edges.
保护状况
Rufous-booted Racket-tail
Green-crowned Plovercrest
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.
Green-crowned Plovercrest
A small hummingbird (9-10 cm) found in southeastern Brazil, eastern Paraguay, and northeastern Argentina. Males have a distinctive green crest resembling a plover's. Nectarivore of Atlantic Forest and cerrado edges. Named plovercrest for the erect green crest.