Annakolibri vs Blue-throated Hillstar
Calypte anna verglichen mit Oreotrochilus cyanolaemus
Side-by-Side Comparison
| Merkmal | Annakolibri | Blue-throated Hillstar |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Oreotrochilus cyanolaemus |
| 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) | — |
| Gewicht | 4,3 g (0.15 oz) | 7,6 g (0.27 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore adapted to very high elevations; forages at Chuquiraga, Gentianella, and Puya flowers. Gleans arthropods. |
| Gelegegröße | 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.
Blue-throated Hillstar
Buzzy, sustained trill with monotonous quality; continuous low-pitched vibration with little variation across prolonged delivery.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Blue-throated Hillstar
Endemic to the Cordillera de Chilla region of extreme southwestern Ecuador in high páramo. 3,200–4,200 m. Endangered.
Erhaltungsstatus
Annakolibri
Blue-throated 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
Blue-throated Hillstar
Little Woodstar: tiny; males with glittering violet gorget; metallic green above; white underparts; females green above; spotted below
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.
Blue-throated Hillstar
A recently discovered hummingbird (11 cm) from the southwestern Andes of Ecuador at 3,300-3,900 m. Males have an iridescent blue throat. Described in 2018. Known from a single ridgeline. Critically Endangered with a range estimated at less than 100 km2.