Annakolibri vs Narrow-tailed Emerald
Calypte anna verglichen mit Chlorostilbon stenurus
Side-by-Side Comparison
| Merkmal | Annakolibri | Narrow-tailed Emerald |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Chlorostilbon stenurus |
| 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) | 8,4 cm (3.3 in) |
| Gewicht | 4,3 g (0.15 oz) | 3,4000000000000004 g (0.12 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on floral nectar at forest edges in northwestern South America. Supplements diet with small … |
| 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.
Narrow-tailed Emerald
Melodic, two-note ascending whistle; pure tones stepping upward clearly, given repeatedly near territory boundary.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Narrow-tailed Emerald
Found in Andean highlands from Venezuela to Peru at 800-2,500 m elevation. Resident in montane forest edges.
Erhaltungsstatus
Annakolibri
Narrow-tailed Emerald
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
Narrow-tailed Emerald
White-chinned Sapphire (alt): males with glittering blue gorget; metallic green above; white chin; 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.
Narrow-tailed Emerald
A small hummingbird (8-9 cm) found in Andean highlands from Venezuela to Peru at 800-2,500 m. Green plumage with a narrow, slightly forked tail. Nectarivore of forest edges and gardens. Named for its distinctively narrow tail feathers.