Anna's Hummingbird vs Blue-headed Hummingbird
Calypte anna مقارنةً بـ Riccordia bicolor
Side-by-Side Comparison
| السمة | Anna's Hummingbird | Blue-headed Hummingbird |
|---|---|---|
| الاسم العلمي | Calypte anna | Riccordia bicolor |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Trochilidae | Trochilidae |
| حالة الحفاظ | Least Concern | Near Threatened |
| الطول | 10,0 cm (3.9 in) | — |
| طول الجناح | 12,0 cm (4.7 in) | — |
| الوزن | 4,3 g (0.15 oz) | 4,55 g (0.16 oz) |
| النظام الغذائي | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore probing tubular flowers in humid forest. Supplements nectar diet with small insects and spiders … |
| عدد البيض في الوضع | 2 | 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.
Blue-headed Hummingbird
Melodic, rolling trill with bright bubbly quality; quick cheerful notes cascading pleasantly from prominent perch.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Blue-headed Hummingbird
Found on Dominica and Martinique in the Lesser Antilles. Resident in montane forest and gardens on both islands.
حالة الحفاظ
Anna's Hummingbird
Blue-headed Hummingbird
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
Blue-headed Hummingbird
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.
Blue-headed Hummingbird
A small hummingbird (9-10 cm) found on Dominica and Martinique in the Lesser Antilles. Bright green plumage with a blue head (males). Nectarivore of montane forest and gardens. One of only two hummingbird species on each island.