Anna's Hummingbird vs Green-bearded Helmetcrest
Calypte anna เปรียบเทียบกับ Oxypogon guerinii
Side-by-Side Comparison
| คุณสมบัติ | Anna's Hummingbird | Green-bearded Helmetcrest |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Calypte anna | Oxypogon guerinii |
| 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) | 14.1 cm (5.6 in) |
| น้ำหนัก | 4.3 g (0.15 oz) | 5.175000000000001 g (0.18 oz) |
| อาหาร | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Colombian páramo; forages at frailejón (Espeletia) and cushion plants. Catches small insects near … |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Anna's Hummingbird only
Green-bearded Helmetcrest 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-bearded Helmetcrest
Sharp, high-pitched squeak with penetrating quality; sudden emphatic note given repeatedly near active feeding territory.
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-bearded Helmetcrest
Endemic to the eastern Andes of Colombia in high páramo at 3,200–4,800 m elevation. Locally common.
สถานะการอนุรักษ์
Anna's Hummingbird
Green-bearded Helmetcrest
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-bearded Helmetcrest
Blue-tailed Hummingbird (alt): males with glittering blue-tipped gorget; metallic green above; blue tail; females green above with 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.
Green-bearded Helmetcrest
A small hummingbird (11-12 cm) endemic to the eastern Andes of Colombia at 3,500-4,500 m. Males have a green beard and erect crest. Nectarivore of páramo and treeline habitats, visiting Espeletia and Ericaceae. A Colombian endemic of high-altitude páramo.