Anna's Hummingbird vs Black-bellied Hummingbird
Calypte anna so với Eupherusa nigriventris
Side-by-Side Comparison
| Thuộc Tính | Anna's Hummingbird | Black-bellied Hummingbird |
|---|---|---|
| Tên Khoa Học | Calypte anna | Eupherusa nigriventris |
| 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) | 9,4 cm (3.7 in) |
| Khối Lượng | 4,3 g (0.15 oz) | 3,3200000000000003 g (0.12 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
Black-bellied Hummingbird 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.
Black-bellied Hummingbird
Soft, high-pitched twittering barely audible; delicate minute notes cascading gently near flowering canopy.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Black-bellied Hummingbird
Found in humid forests of Costa Rica and western Panama at 700-1,800 m. Resident in cloud forest undergrowth.
Tình Trạng Bảo Tồn
Anna's Hummingbird
Black-bellied 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
Black-bellied Hummingbird
Pavonine Cuckoo: dark iridescent blue-green above; rufous underparts; pale supercilium; long blue-green tail; peacock-eye tail pattern
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.
Black-bellied Hummingbird
A medium-sized hummingbird (9-10 cm) found in humid forests of Costa Rica and western Panama at 700-1,800 m. Males have a distinctive black belly contrasting with green breast. Nectarivore of cloud forest undergrowth and edges.