Anna's Hummingbird vs Coppery-headed Emerald
Calypte anna so với Microchera cupreiceps
Side-by-Side Comparison
| Thuộc Tính | Anna's Hummingbird | Coppery-headed Emerald |
|---|---|---|
| Tên Khoa Học | Calypte anna | Microchera cupreiceps |
| 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) | — |
| Khối Lượng | 4,3 g (0.15 oz) | 3,15 g (0.11 oz) |
| Chế Độ Ăn | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on nectar from diverse forest flowers, hovering briefly at each bloom. Takes small insects … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Không
Anna's Hummingbird only
Coppery-headed Emerald only
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.
Coppery-headed Emerald
Rough, grating buzz with coarse texture; harsh sustained vibration carrying across open scrubby hillside.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Coppery-headed Emerald
Endemic to the highlands of Costa Rica at 700-1,600 m. Classified as Near Threatened. A Costa Rican endemic.
Tình Trạng Bảo Tồn
Anna's Hummingbird
Coppery-headed 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
Coppery-headed 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.
Coppery-headed Emerald
A small hummingbird (8-9 cm) endemic to the highlands of Costa Rica at 700-1,600 m. Males have a glittering copper-green crown and white breast. Nectarivore of cloud forest and forest edges. A Costa Rican endemic. Classified as Near Threatened.