Rufous-booted Racket-tail vs Puerto Rican Emerald
Ocreatus addae 比較対象 Riccordia maugaeus
Side-by-Side Comparison
| 属性 | Rufous-booted Racket-tail | Puerto Rican Emerald |
|---|---|---|
| 学名 | Ocreatus addae | Riccordia maugaeus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Not Evaluated | Least Concern |
| 体長 | — | — |
| 翼開長 | — | — |
| 体重 | 3.0 g (0.11 oz) | 4.25 g (0.15 oz) |
| 食性 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Puerto Rican endemic nectarivore, visiting forest and garden flowers. Supplements nectar with insects and spiders … |
| 一腹卵数 | 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.
Puerto Rican Emerald
Thin, reedy trill with nasal overtone; soft chattering notes delivered continuously during rapid low flight.
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.
Puerto Rican Emerald
Endemic to Puerto Rico. Resident across the island from coastal lowlands to mountain cloud forests.
保全状況
Rufous-booted Racket-tail
Puerto Rican Emerald
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.
Puerto Rican Emerald
A small hummingbird (9-10 cm) endemic to Puerto Rico. Bright emerald-green plumage. Nectarivore of forests, gardens, and plantations across the island. Puerto Rico's only endemic hummingbird. Found from coastal lowlands to mountain cloud forests.