Anna's Hummingbird vs 兀鹫
Calypte anna 对比 Gyps fulvus
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | 兀鹫 |
|---|---|---|
| 学名 | Calypte anna | Gyps fulvus |
| 目 | Caprimulgiformes | Accipitriformes |
| 科 | Trochilidae | Accipitridae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 10.0 cm (3.9 in) | 100.0 cm (39.4 in) |
| 翼展 | 12.0 cm (4.7 in) | 260.0 cm (102.4 in) |
| 体重 | 4.3 g (0.15 oz) | 8500.0 g (299.83 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Exclusively carrion, primarily large mammal carcasses. Feeds communally, with groups of vultures able to strip … |
| 产卵数 | 2 | 1 |
| 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.
兀鹫
Mountains, cliffs, and open grasslands. Nests on cliff ledges in colonies. Requires thermals for soaring flight.
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.
兀鹫
Generally silent; hisses and grunts at carrion with other vultures. Gives low croaking 'arrr' near nest. At colonies produces cackling and grunting — not melodic vocalizations.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
兀鹫
Southern Europe, North Africa, the Middle East, and Central Asia. Resident in most of its range.
保护状况
Anna's Hummingbird
兀鹫
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
兀鹫
Tawny-brown body with darker flight feathers. White neck ruff and bare greyish head. Long broad wings held flat when soaring.
Hooked yellowish bill adapted for tearing carrion
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.
兀鹫
The griffon vulture is one of Europe's largest flying birds and a crucial scavenger in Mediterranean ecosystems. These social birds nest in large cliff colonies and can soar for hours using thermals without flapping. Vulture populations faced a crisis from the veterinary drug diclofenac, which proved fatal when consumed through contaminated carcasses.