Annakolibri vs Green-tailed Goldenthroat
Calypte anna verglichen mit Polytmus theresiae
Side-by-Side Comparison
| Merkmal | Annakolibri | Green-tailed Goldenthroat |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Polytmus theresiae |
| 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) | 3,575 g (0.13 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of open wetland margins and savanna; forages at diverse flower types. Takes tiny flies … |
| 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 Goldenthroat
Rough, grating buzz with coarse texture; sustained low-pitched trill with vibrating quality audible over some distance.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Green-tailed Goldenthroat
Found in open savanna and forest edges of the Guianas and Amazonian Venezuela and Brazil. Sea level to 600 m.
Erhaltungsstatus
Annakolibri
Green-tailed Goldenthroat
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 Goldenthroat
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 Goldenthroat
A medium-sized hummingbird (10-11 cm) found in humid lowland forests and edges from the Guianas through Amazonia to Bolivia and Brazil. Green plumage with a golden-green throat and greenish tail. Nectarivore of forest edges and clearings.