Anna's Hummingbird vs Green Violetear
Calypte anna เปรียบเทียบกับ Colibri thalassinus
Side-by-Side Comparison
| คุณสมบัติ | Anna's Hummingbird | Green Violetear |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Calypte anna | Colibri thalassinus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Trochilidae | Trochilidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | 10.0 cm (3.9 in) | — |
| กว้างปีก | 12.0 cm (4.7 in) | 12.5 cm (4.9 in) |
| น้ำหนัก | 4.3 g (0.15 oz) | 5.092499999999999 g (0.18 oz) |
| อาหาร | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of montane gardens and cloud-forest borders. Takes small insects in aerial sallies from prominent … |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Anna's Hummingbird only
Green Violetear 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.
Green Violetear
Melodic, descending four-note phrase; clear flute-like tones stepping down smoothly, characteristic of violetear territory song.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Green Violetear
Found in highlands from central Mexico south through Central America to western Bolivia. Common in montane forest at 1,000–3,000 m.
สถานะการอนุรักษ์
Anna's Hummingbird
Green Violetear
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
Green Violetear
Short-tailed Emerald: iridescent green above with coppery rump; white underparts; rufous flanks; sexually dimorphic; straight short bill
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.
Green Violetear
A medium-sized hummingbird (10-12 cm) with brilliant green plumage and iridescent violet-blue ear patches. Found in highlands from Mexico to Nicaragua at 1,000-3,500 m. Nectarivore of mountain forests, gardens, and cloud forest edges. Common and conspicuous. Formerly included Lesser Violetear.