Anna's Hummingbird vs Santa Marta Woodstar
Calypte anna 比較対象 Chaetocercus astreans
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Santa Marta Woodstar |
|---|---|---|
| 学名 | Calypte anna | Chaetocercus astreans |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 10.0 cm (3.9 in) | — |
| 翼開長 | 12.0 cm (4.7 in) | 6.7 cm (2.6 in) |
| 体重 | 4.3 g (0.15 oz) | 2.605 g (0.09 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Endemic to the Sierra Nevada de Santa Marta; feeds on highland floral nectar and supplements … |
| 一腹卵数 | 2 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Anna's Hummingbird
Chaparral, coastal sage scrub, gardens, parks, and open woodland along the Pacific coast. One of few hummingbirds not fully migratory.
Song & Call Comparison
Anna's Hummingbird
Male produces a complex, scratchy song with buzzy 'dzzzzt' notes. Gives a nasal 'chee-chee-chee'. Males sing year-round, even in winter; one of few hummingbirds with true song.
Santa Marta Woodstar
Rapid, mechanical clicking trill; quick even staccato notes in steady dry rhythm throughout active day.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Santa Marta Woodstar
Endemic to the Sierra Nevada de Santa Marta, Colombia, at 1,200-3,000 m elevation. Found nowhere else in the world.
保全状況
Anna's Hummingbird
Santa Marta Woodstar
How to Tell Them Apart
Anna's Hummingbird
Metallic bronze-green upperparts. Males have an iridescent rose-red crown and gorget. Females have green upperparts with grey underparts and a small red gorget patch.
Medium-length, straight, thin black bill
Santa Marta Woodstar
Bahama Woodstar (alt): tiny; males with glittering magenta-rose gorget; metallic green above; white underparts; females spotted below
About These Birds
Anna's Hummingbird
Anna's hummingbird is the most common hummingbird along the Pacific coast and one of only three species resident in the United States year-round. Males perform spectacular dive displays, plummeting from 40 meters and pulling up with a loud chirp produced by tail feathers. Their body temperature can drop to near ambient at night to conserve energy.
Santa Marta Woodstar
コロンビア・シエラネバダ・デ・サンタ・マルタ固有の微小ハチドリ（7 cm）で標高1,200〜3,000 mに生息。雄は輝くゴージェット羽を持つ。山地林縁で花蜜を吸う。生息地が限定的。