Tres Marias Hummingbird vs Sword-billed Hummingbird
Cynanthus lawrencei 对比 Ensifera ensifera
Side-by-Side Comparison
| 属性 | Tres Marias Hummingbird | Sword-billed Hummingbird |
|---|---|---|
| 学名 | Cynanthus lawrencei | Ensifera ensifera |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | — |
| 翼展 | 10.0 cm (3.9 in) | 15.3 cm (6.0 in) |
| 体重 | 3.05 g (0.11 oz) | 12.75 g (0.45 oz) |
| 食性 | Feeds on nectar from Tres Marias Island flowers; diet supplemented with small insects and spiders … | Nectarivore uniquely adapted to extremely long flowers of Passiflora and Datura. Supplements with small insects … |
| 产卵数 | 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.
Sword-billed Hummingbird
Thin, reedy whistle with plaintive character; soft nasal tone held briefly then gently fading in mist.
Geographic Range & Migration
Tres Marias Hummingbird
Endemic to the Tres Marías Islands off the Pacific coast of western Mexico. Resident in tropical deciduous forest.
Sword-billed Hummingbird
Found in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,700–3,500 m.
保护状况
Tres Marias Hummingbird
Sword-billed Hummingbird
How to Tell Them Apart
Tres Marias Hummingbird
Rufous-tailed Hummingbird: males with iridescent green gorget; metallic green above; rufous tail; buff underparts; females similar
Sword-billed Hummingbird
Olivaceous Thornbill: males with iridescent purple gorget; metallic olive-bronze above; white underparts; females green above; spots
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.
Sword-billed Hummingbird
剑嘴蜂鸟。嘴与身体等长（8-10厘米）。栖息于安第斯云雾林。专门取食深处的西番莲花蜜。