Annakolibri vs Rainbow-bearded Thornbill
Calypte anna verglichen mit Chalcostigma herrani
Side-by-Side Comparison
| Merkmal | Annakolibri | Rainbow-bearded Thornbill |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Chalcostigma herrani |
| 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) | 13,5 cm (5.3 in) |
| Gewicht | 4,3 g (0.15 oz) | 6,183333333333334 g (0.22 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Colombian and Venezuelan montane scrub; visits diverse small flowers. Supplements with small insects. |
| 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.
Rainbow-bearded Thornbill
Thin, reedy trill with wavering quality; soft rapid notes with gentle tremolo effect, given from dense cover.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Rainbow-bearded Thornbill
Found in high Andean páramo and shrubby forest edge from Colombia south to Ecuador and Peru. 2,600–4,400 m.
Erhaltungsstatus
Annakolibri
Rainbow-bearded Thornbill
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
Rainbow-bearded Thornbill
Snowcap: males with brilliant iridescent blue-violet gorget; snow-white crown; metallic green above; 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.
Rainbow-bearded Thornbill
A small hummingbird (10-11 cm) found in Andean páramo from Colombia to Ecuador at 2,800-4,000 m. Males have a spectacular rainbow-colored beard of iridescent feathers ranging from green through gold to purple. Nectarivore of páramo flowering shrubs.