Annakolibri vs Band-tailed Barbthroat
Calypte anna verglichen mit Threnetes ruckeri
Side-by-Side Comparison
| Merkmal | Annakolibri | Band-tailed Barbthroat |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Threnetes ruckeri |
| 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) | 11,3 cm (4.4 in) |
| Gewicht | 4,3 g (0.15 oz) | 6,0 g (0.21 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore specialising in long curved tubular flowers; also hawks small flies and midges near forest … |
| 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.
Band-tailed Barbthroat
Crisp, emphatic single chip repeated at intervals; clear staccato note with sharp attack and brief resonant tail.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Band-tailed Barbthroat
Found from southern Mexico through Central America to western Colombia and northwestern Venezuela. Resident in lowland forest and shaded streams.
Erhaltungsstatus
Annakolibri
Band-tailed Barbthroat
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
Band-tailed Barbthroat
Bronze-green upperparts; pale buff underparts with dark throat; broad black-and-white banded tail with rufous base; blackish chin and throat with pale malar stripe; Central American species with boldly banded tail …
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.
Band-tailed Barbthroat
A medium-sized hummingbird (10-12 cm) with a decurved bill, found in humid lowland forests from Guatemala to northwestern Colombia. Green plumage with a pale breast band. Named for the barb-like feathers on its throat. Nectarivore of forest undergrowth, visiting Heliconia flowers.