Anna's Hummingbird vs Cozumel Emerald
Calypte anna so với Cynanthus forficatus
Side-by-Side Comparison
| Thuộc Tính | Anna's Hummingbird | Cozumel Emerald |
|---|---|---|
| Tên Khoa Học | Calypte anna | Cynanthus forficatus |
| 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) | 2,5 g (0.09 oz) |
| Chế Độ Ăn | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore specialising in tubular blossoms; supplements the floral nectar diet with tiny 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.
Cozumel Emerald
Soft, high-pitched twittering barely audible; delicate minute notes cascading gently near flowering trees.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Cozumel Emerald
Endemic to Cozumel Island off the Yucatán Peninsula, Mexico. Classified as Vulnerable due to its tiny island range.
Tình Trạng Bảo Tồn
Anna's Hummingbird
Cozumel 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
Cozumel Emerald
Edward's Hummingbird: males with iridescent blue gorget; metallic green above; white underparts; females green above; 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.
Cozumel Emerald
A medium-sized hummingbird (9-10 cm) endemic to Cozumel Island off the Yucatán Peninsula, Mexico. Green plumage with a forked tail. Nectarivore of the island's tropical forest and gardens. A very range-restricted island endemic. Classified as Vulnerable.