Plain-capped Starthroat vs Ruby-throated Hummingbird
Heliomaster constantii 比較対象 Archilochus colubris
Side-by-Side Comparison
| 属性 | Plain-capped Starthroat | Ruby-throated Hummingbird |
|---|---|---|
| 学名 | Heliomaster constantii | Archilochus colubris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 8.5 cm (3.3 in) |
| 翼開長 | 12.5 cm (4.9 in) | 11.0 cm (4.3 in) |
| 体重 | 7.375 g (0.26 oz) | 3.1 g (0.11 oz) |
| 食性 | Nectarivore of Mexican and Central American dry and semi-open habitats. Visits large flowers; catches insects … | Nectar from tubular flowers, supplemented with small insects and spiders for protein. Feeds at over … |
| 一腹卵数 | -- | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Ruby-throated Hummingbird
Deciduous and mixed forests, woodland edges, gardens, and parks with flowering plants. Migrates across the Gulf of Mexico.
Song & Call Comparison
Plain-capped Starthroat
High, thin twittering barely audible; delicate cascade of minute notes, poorly documented vocal repertoire.
Ruby-throated Hummingbird
Soft, high-pitched chattering and twittering 'chee-dit'. Also produces a thin 'tik' call in flight. Wing beats create an audible high-pitched humming buzz during hovering.
Geographic Range & Migration
Plain-capped Starthroat
Found from northwestern Mexico south through Central America to northwestern Costa Rica in dry forest. Sea level to 1,800 m.
Ruby-throated Hummingbird
Eastern North America from southern Canada to the Gulf Coast. Winters in Central America and southern Mexico.
保全状況
Plain-capped Starthroat
Ruby-throated Hummingbird
How to Tell Them Apart
Plain-capped Starthroat
Peruvian Sheartail (alt): males with glittering violet gorget; metallic green above; white underparts; females green above; spotted
Ruby-throated Hummingbird
Metallic green upperparts and greyish-white underparts. Males have a brilliant iridescent ruby-red gorget that appears black in poor light. Females lack the gorget.
Long, straight, thin black bill adapted for probing flowers
About These Birds
Plain-capped Starthroat
メキシコからコスタリカにかけての中央アメリカ太平洋斜面（標高0〜1,500 m）の乾燥・半湿潤林と林縁に生息する中型ハチドリ（体長11〜12 cm）。雄は白い縞のある暗い羽衣と紫に輝く喉を持つ。長いくちばしで花の蜜を採食。
Ruby-throated Hummingbird
The ruby-throated hummingbird is the only breeding hummingbird in eastern North America. These tiny birds beat their wings about 53 times per second and can fly backwards, sideways, and even briefly upside down. They make an extraordinary non-stop 800 km crossing of the Gulf of Mexico during migration.