Anna's Hummingbird vs Juan Fernandez Firecrown
Calypte anna comparado com Sephanoides fernandensis
Side-by-Side Comparison
| Atributo | Anna's Hummingbird | Juan Fernandez Firecrown |
|---|---|---|
| Nome científico | Calypte anna | Sephanoides fernandensis |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Trochilidae | Trochilidae |
| Estado de conservação | Least Concern | Critically Endangered |
| Comprimento | 10,0 cm (3.9 in) | — |
| Envergadura | 12,0 cm (4.7 in) | 15,2 cm (6.0 in) |
| Peso | 4,3 g (0.15 oz) | 8,5 g (0.30 oz) |
| Dieta | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Juan Fernandez Island; critically dependent on endemic flowering plants for nectar. Supplements with … |
| Tamanho da postura | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Nenhum
Anna's Hummingbird only
Juan Fernandez Firecrown 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.
Juan Fernandez Firecrown
Harsh, grating chatter with nasal overtone; rough buzzy notes delivered rapidly in energetic territorial exchange.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Juan Fernandez Firecrown
Endemic to the Juan Fernández Islands of Chile (Más a Tierra / Robinson Crusoe). Found island-wide. Critically endangered.
Estado de conservação
Anna's Hummingbird
Juan Fernandez Firecrown
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
Juan Fernandez Firecrown
Rainbow-bearded Thornbill: males with glittering rainbow-hued gorget; metallic green above; females green above; buff below 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.
Juan Fernandez Firecrown
A medium-sized hummingbird (11-12 cm) endemic to the Juan Fernández Islands off Chile. Males fiery rufous-orange with a golden crown. Females green with white underparts. Critically Endangered with fewer than 500 individuals remaining. Nectarivore of endemic island plants.