Anna's Hummingbird vs Rufous-gaped Hillstar
Calypte anna เปรียบเทียบกับ Urochroa bougueri
Side-by-Side Comparison
| คุณสมบัติ | Anna's Hummingbird | Rufous-gaped Hillstar |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Calypte anna | Urochroa bougueri |
| 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) | 15.7 cm (6.2 in) |
| น้ำหนัก | 4.3 g (0.15 oz) | 11.35 g (0.40 oz) |
| อาหาร | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Colombian and Ecuadorian montane forest; visits Ericaceae and Fuchsia blooms. Catches small arthropods. |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Anna's Hummingbird only
Rufous-gaped Hillstar 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.
Rufous-gaped Hillstar
Thin, crystalline twittering with airy quality; light rapid notes cascading softly in animated aerial display.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Rufous-gaped Hillstar
Found on the Pacific slope and western Andean ridge from Colombia south to Ecuador at 1,200–2,800 m.
สถานะการอนุรักษ์
Anna's Hummingbird
Rufous-gaped Hillstar
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
Rufous-gaped Hillstar
White-tipped Sicklebill (alt): males with ruby-red gorget; metallic green; white-tipped outer tail feathers; females green above; spots
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.
Rufous-gaped Hillstar
A medium-sized hummingbird (13-14 cm) found in cloud forests of western Colombia and Ecuador at 1,000-2,200 m. Green plumage with rufous vent and long, deeply notched tail. Nectarivore of Chocó cloud forest. Named hillstar despite being a lowland-montane species.