Booted Racket-tail vs Allen's Hummingbird
Ocreatus underwoodii 比較対象 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Booted Racket-tail | Allen's Hummingbird |
|---|---|---|
| 学名 | Ocreatus underwoodii | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 8.5 cm (3.3 in) | 8.1 cm (3.2 in) |
| 体重 | 2.8 g (0.10 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore of Andean foothill forest; visits Ericaceae and Heliconia flowers. Catches small insects in aerial … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Booted Racket-tail
Melodic, rolling phrase with liquid quality; warm bubbly notes tumbling in pleasant continuous musical sequence.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Booted Racket-tail
Widespread in Andean foothill and cloud forests from Venezuela south through Colombia, Ecuador, and Peru. 200–1,800 m.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
保全状況
Booted Racket-tail
Allen's Hummingbird
About These Birds
Booted Racket-tail
A small hummingbird (8-10 cm plus 5-7 cm tail rackets in males) widely distributed in Andean cloud forests from Venezuela to Bolivia at 1,500-3,000 m. Males have long, wire-like outer tail feathers ending in dark blue racket tips and fluffy white leg puffs. A cloud forest icon.
Allen's Hummingbird
A small hummingbird (8-9 cm) breeding along the Pacific coast from Oregon to southern California. Males have an orange-red throat and rufous flanks. Closely related to Rufous Hummingbird. Partial migrant; some populations resident on Channel Islands. Named after Thomas Allen.