Blue-throated Hillstar vs Ruby-throated Hummingbird
Oreotrochilus cyanolaemus 比較対象 Archilochus colubris
Side-by-Side Comparison
| 属性 | Blue-throated Hillstar | Ruby-throated Hummingbird |
|---|---|---|
| 学名 | Oreotrochilus cyanolaemus | Archilochus colubris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Critically Endangered | Least Concern |
| 体長 | — | 8.5 cm (3.3 in) |
| 翼開長 | — | 11.0 cm (4.3 in) |
| 体重 | 7.6 g (0.27 oz) | 3.1 g (0.11 oz) |
| 食性 | Nectarivore adapted to very high elevations; forages at Chuquiraga, Gentianella, and Puya flowers. Gleans arthropods. | 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
Blue-throated Hillstar
Buzzy, sustained trill with monotonous quality; continuous low-pitched vibration with little variation across prolonged delivery.
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
Blue-throated Hillstar
Endemic to the Cordillera de Chilla region of extreme southwestern Ecuador in high páramo. 3,200–4,200 m. Endangered.
Ruby-throated Hummingbird
Eastern North America from southern Canada to the Gulf Coast. Winters in Central America and southern Mexico.
保全状況
Blue-throated Hillstar
Ruby-throated Hummingbird
How to Tell Them Apart
Blue-throated Hillstar
Little Woodstar: tiny; males with glittering violet gorget; metallic green above; white underparts; females green above; spotted below
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
Blue-throated Hillstar
A recently discovered hummingbird (11 cm) from the southwestern Andes of Ecuador at 3,300-3,900 m. Males have an iridescent blue throat. Described in 2018. Known from a single ridgeline. Critically Endangered with a range estimated at less than 100 km2.
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.