Rufous-tailed Hummingbird vs Annakolibri
Amazilia tzacatl verglichen mit Calypte anna
Side-by-Side Comparison
| Merkmal | Rufous-tailed Hummingbird | Annakolibri |
|---|---|---|
| Wissenschaftlicher Name | Amazilia tzacatl | Calypte anna |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Trochilidae | Trochilidae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | 10,0 cm (3.9 in) |
| Flügelspannweite | 11,3 cm (4.4 in) | 12,0 cm (4.7 in) |
| Gewicht | 5,04 g (0.18 oz) | 4,3 g (0.15 oz) |
| Ernährung | Common lowland nectarivore of Central America; visits Heliconia, banana, and garden flowers. Supplements with insects … | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … |
| 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
Rufous-tailed Hummingbird
Deep, resonant trill with buzzing character; powerful churring vibration carrying across open hillside.
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.
Geographic Range & Migration
Rufous-tailed Hummingbird
Widely distributed from Mexico through Central America to western Ecuador. Resident in varied lowland habitats.
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Erhaltungsstatus
Rufous-tailed Hummingbird
Annakolibri
How to Tell Them Apart
Rufous-tailed Hummingbird
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
About These Birds
Rufous-tailed Hummingbird
A medium-sized hummingbird (10-11 cm) widely distributed from Mexico through Central America to western Ecuador. Green plumage with a rufous tail. Red bill with dark tip. Nectarivore of gardens, forest edges, and second growth. One of the most common Neotropical hummingbirds.
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.