Amethyst Woodstar vs Ruby-throated Hummingbird
Calliphlox amethystina 比較対象 Archilochus colubris
Side-by-Side Comparison
| 属性 | Amethyst Woodstar | Ruby-throated Hummingbird |
|---|---|---|
| 学名 | Calliphlox amethystina | 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 | 7.0 cm (2.8 in) | 11.0 cm (4.3 in) |
| 体重 | 2.9 g (0.10 oz) | 3.1 g (0.11 oz) |
| 食性 | Nectarivore visiting small flowers at forest edges and clearings; insect-like flight. Catches tiny flies and … | Nectar from tubular flowers, supplemented with small insects and spiders for protein. Feeds at over … |
| 一腹卵数 | 2 | 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
Amethyst Woodstar
High, crystalline notes in ascending phrase; clear bright musical tones climbing smoothly in lively morning song.
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
Amethyst Woodstar
Widespread in open habitats from Bolivia and Brazil south to Argentina, Paraguay, and Uruguay. Sea level to 1,200 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
Amethyst Woodstar
Ruby-throated Hummingbird
How to Tell Them Apart
Amethyst Woodstar
Buff-breasted Sabrewing: males with glittering purple gorget; metallic bronze-green above; buff underparts; females green above; spots
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
Amethyst Woodstar
南米（ブラジル、ボリビア、アルゼンチン北部）の熱帯林縁、庭園、二次林に生息する小型のハチドリ（体長6〜8cm）。雄のアメジスト色に輝く喉が最大の特徴。Calliphlox amethystina（アメジストウッドスター）は南米最小のハチドリの一つで、体重は1g程度しかない。Trochilidae科。
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.