Annakolibri vs Green-tailed Emerald
Calypte anna verglichen mit Chlorostilbon alice
Side-by-Side Comparison
| Merkmal | Annakolibri | Green-tailed Emerald |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Chlorostilbon alice |
| 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) | — |
| Gewicht | 4,3 g (0.15 oz) | 3,5 g (0.12 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Venezuelan dry scrub, hovering at low shrub blooms. Catches gnats and spiders to … |
| 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.
Green-tailed Emerald
Buzzy, sustained trill with insect-like quality; continuous high-frequency vibration with rapid amplitude modulation.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Green-tailed Emerald
Found in montane regions of Venezuela at 500-2,000 m elevation. A Venezuelan endemic or near-endemic.
Erhaltungsstatus
Annakolibri
Green-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
Green-tailed Emerald
Elliot's Hummingbird (Elliotomyia): males with iridescent violet gorget; metallic green above; white underparts; females green; spots
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.
Green-tailed Emerald
A small hummingbird (8-9 cm) found in montane regions of Venezuela at 500-2,000 m. Green plumage with a green tail. Nectarivore of forest edges and clearings. A Venezuelan endemic or near-endemic. Sometimes treated as a subspecies.