Anna's Hummingbird vs Oaxaca Hummingbird
Calypte anna so với Eupherusa cyanophrys
Side-by-Side Comparison
| Thuộc Tính | Anna's Hummingbird | Oaxaca Hummingbird |
|---|---|---|
| Tên Khoa Học | Calypte anna | Eupherusa cyanophrys |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Least Concern | Endangered |
| Chiều Dài | 10,0 cm (3.9 in) | — |
| Chiều Dài Sải Cánh | 12,0 cm (4.7 in) | 11,7 cm (4.6 in) |
| Khối Lượng | 4,3 g (0.15 oz) | 4,725 g (0.17 oz) |
| Chế Độ Ăn | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Hovering nectarivore of lowland and montane forest, probing Heliconia and garden flowers. Supplements with insects … |
| 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.
Oaxaca Hummingbird
Pure, sustained whistle with bell-like clarity; clear single note ringing out then slowly fading away.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Oaxaca Hummingbird
Endemic to the mountains of Oaxaca, Mexico. Classified as Endangered due to extremely small range.
Tình Trạng Bảo Tồn
Anna's Hummingbird
Oaxaca 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
Oaxaca Hummingbird
Striped Cuckoo: pale brown-white below with dark streaks; boldly streaked dark brown above; long white-tipped tail; pale supercilium
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.
Oaxaca Hummingbird
A medium-sized hummingbird (10-11 cm) endemic to the mountains of Oaxaca, southwestern Mexico. Green plumage with blue supercilium (eyebrow). Nectarivore of cloud forest and forest edges. Classified as Endangered due to extremely small range in the Sierra de Miahuatlán.