Annakolibri vs Juan Fernandez Firecrown
Calypte anna verglichen mit Sephanoides fernandensis
Side-by-Side Comparison
| Merkmal | Annakolibri | Juan Fernandez Firecrown |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Sephanoides fernandensis |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Trochilidae | Trochilidae |
| Erhaltungsstatus | Least Concern | Critically Endangered |
| Länge | 10,0 cm (3.9 in) | — |
| Flügelspannweite | 12,0 cm (4.7 in) | 15,2 cm (6.0 in) |
| Gewicht | 4,3 g (0.15 oz) | 8,5 g (0.30 oz) |
| Ernährung | 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 … |
| Gelegegröße | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Annakolibri
Chaparral, coastal sage scrub, gardens, parks, and open woodland along the Pacific coast. One of few hummingbirds not fully migratory.
Song & Call Comparison
Annakolibri
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
Annakolibri
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.
Erhaltungsstatus
Annakolibri
Juan Fernandez Firecrown
How to Tell Them Apart
Annakolibri
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
Annakolibri
Der Annakolibri ist der häufigste Kolibri entlang der Pazifikküste und eine von nur drei Kolibriarten, die ganzjährig in den USA verweilen. Männchen zeigen spektakuläre Sturzflüge aus 40 Metern Höhe und fangen sich mit einem lauten, von den Schwanzfedern erzeugten Zwitschern ab. Nachts kann ihre Körpertemperatur nahezu auf Umgebungstemperatur absinken, um Energie zu sparen.
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.