Anna's Hummingbird vs White-bellied Mountain-gem
Calypte anna เปรียบเทียบกับ Lampornis hemileucus
Side-by-Side Comparison
| คุณสมบัติ | Anna's Hummingbird | White-bellied Mountain-gem |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Calypte anna | Lampornis hemileucus |
| 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) | 5.6000000000000005 g (0.20 oz) |
| อาหาร | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of montane forest understory and edges; visits Ericaceae and Salvia blooms. Gleans small insects … |
| จำนวนไข่ | 2 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Anna's Hummingbird only
White-bellied Mountain-gem 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.
White-bellied Mountain-gem
Melodic, two-note falling whistle; pure warm tones descending gently, given repeatedly from prominent perch.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
White-bellied Mountain-gem
Found in highland forest of Costa Rica and Panama on both slopes in cloud forest. 800–2,000 m elevation.
สถานะการอนุรักษ์
Anna's Hummingbird
White-bellied Mountain-gem
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
White-bellied Mountain-gem
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.
White-bellied Mountain-gem
A medium-sized hummingbird (11-12 cm) endemic to the highlands of Costa Rica and western Panama at 1,200-2,500 m. Males green with white belly. Nectarivore of cloud forest and forest edges. One of several mountain-gem species endemic to Central American highlands.