Annakolibri vs Rufous-shafted Woodstar
Calypte anna verglichen mit Chaetocercus jourdanii
Side-by-Side Comparison
| Merkmal | Annakolibri | Rufous-shafted Woodstar |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Chaetocercus jourdanii |
| 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) | 7,0 cm (2.8 in) |
| Gewicht | 4,3 g (0.15 oz) | 3,26 g (0.11 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Trinidad and northern South America, hovering at bromeliads and Heliconia. Supplements diet 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.
Rufous-shafted Woodstar
Deep, resonant single note with striking boldness; powerful tone ringing out clearly from exposed prominent perch.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Rufous-shafted Woodstar
Found in Andean highlands from Venezuela to Trinidad at 500-2,500 m elevation. Resident in montane forest edges and gardens.
Erhaltungsstatus
Annakolibri
Rufous-shafted Woodstar
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
Rufous-shafted Woodstar
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.
Rufous-shafted Woodstar
A tiny hummingbird (7-8 cm) found in Andean highlands from Venezuela to Trinidad at 500-2,500 m. Males have rufous wing-shafts visible in flight and a purple gorget. Nectarivore of forest edges, gardens, and open country. Named after its rufous wing feather shafts.