Anna's Hummingbird vs Garden Emerald
Calypte anna so với Chlorostilbon assimilis
Side-by-Side Comparison
| Thuộc Tính | Anna's Hummingbird | Garden Emerald |
|---|---|---|
| Tên Khoa Học | Calypte anna | Chlorostilbon assimilis |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 10,0 cm (3.9 in) | — |
| Chiều Dài Sải Cánh | 12,0 cm (4.7 in) | 9,0 cm (3.5 in) |
| Khối Lượng | 4,3 g (0.15 oz) | 3,55 g (0.13 oz) |
| Chế Độ Ăn | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on floral nectar in lowland Panama gardens and woodland. Catches small insects and spiders … |
| Số Trứng | 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.
Garden Emerald
Thin, sibilant buzz with wavering quality; soft high trill with gentle tremolo effect during hover display.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Garden Emerald
Found in humid lowlands from Costa Rica to northern Colombia on the Pacific slope. Resident in gardens and second growth.
Tình Trạng Bảo Tồn
Anna's Hummingbird
Garden Emerald
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
Garden Emerald
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.
Garden Emerald
A small hummingbird (8-9 cm) found in humid lowlands from Costa Rica to northern Colombia. Bright green plumage. Nectarivore of gardens, second growth, and forest edges. Closely related to Canivet's Emerald. Found primarily on the Pacific slope.