Anna's Hummingbird vs White-tailed Hummingbird
Calypte anna comparado com Eupherusa poliocerca
Side-by-Side Comparison
| Atributo | Anna's Hummingbird | White-tailed Hummingbird |
|---|---|---|
| Nome científico | Calypte anna | Eupherusa poliocerca |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Trochilidae | Trochilidae |
| Estado de conservação | Least Concern | Near Threatened |
| Comprimento | 10,0 cm (3.9 in) | — |
| Envergadura | 12,0 cm (4.7 in) | 12,1 cm (4.8 in) |
| Peso | 4,3 g (0.15 oz) | 4,625 g (0.16 oz) |
| Dieta | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on nectar from flowering shrubs and epiphytes. Catches small insects and spiders to meet … |
| Tamanho da postura | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Nenhum
Anna's Hummingbird only
White-tailed Hummingbird 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-tailed Hummingbird
Harsh, buzzy chatter with emphatic rhythm; coarse rough notes delivered rapidly with raw buzzy texture.
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-tailed Hummingbird
Endemic to the Sierra Madre del Sur of Guerrero and Oaxaca, Mexico. Classified as Vulnerable due to restricted range.
Estado de conservação
Anna's Hummingbird
White-tailed Hummingbird
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-tailed Hummingbird
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-tailed Hummingbird
A medium-sized hummingbird (10-11 cm) endemic to the Sierra Madre del Sur of Guerrero and Oaxaca, southwestern Mexico. Green plumage with white outer tail feathers. Nectarivore of montane forest. Classified as Vulnerable due to restricted range.