Annakolibri vs White-sided Hillstar
Calypte anna verglichen mit Oreotrochilus leucopleurus
Side-by-Side Comparison
| Merkmal | Annakolibri | White-sided Hillstar |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Oreotrochilus leucopleurus |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Trochilidae | Trochilidae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | 10,0 cm (3.9 in) | — |
| Flügelspannweite | 12,0 cm (4.7 in) | 13,6 cm (5.4 in) |
| Gewicht | 4,3 g (0.15 oz) | 6,6 g (0.23 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore foraging above treeline at sparse Ericaceae and Chuquiraga patches. Supplements with small arthropods. |
| 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.
White-sided Hillstar
Melodic, ascending phrase with hopeful character; smooth pure tones rising steadily in clear musical progression at dawn.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
White-sided Hillstar
Found in the Andes and Patagonian steppe of Argentina and Chile from 1,000–4,000 m. Partly migratory.
Erhaltungsstatus
Annakolibri
White-sided Hillstar
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
White-sided Hillstar
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.
White-sided Hillstar
A medium-sized hummingbird (12-13 cm) found in the southern Andes from Bolivia to Argentina at 2,500-4,500 m. Green plumage with white flanks. Nectarivore of puna grasslands and rocky slopes. Enters torpor nightly to survive cold Andean nights. Southern Andean near-endemic.