Annakolibri vs Rufous Hummingbird
Calypte anna verglichen mit Selasphorus rufus
Side-by-Side Comparison
| Merkmal | Annakolibri | Rufous Hummingbird |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Selasphorus rufus |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Trochilidae | Trochilidae |
| Erhaltungsstatus | Least Concern | Near Threatened |
| Länge | 10,0 cm (3.9 in) | — |
| Flügelspannweite | 12,0 cm (4.7 in) | 8,1 cm (3.2 in) |
| Gewicht | 4,3 g (0.15 oz) | 3,72 g (0.13 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Highly migratory nectarivore visiting a wide diversity of western North American flowers. Supplements with insects … |
| 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 Hummingbird
Soft, liquid notes with gentle melancholy; mellow flowing sequence with subtle sadness in quiet forest.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Rufous Hummingbird
Breeds from Alaska south to Oregon. Migrates up to 6,400 km to winter in Mexico, the longest migration relative to body size of any bird.
Erhaltungsstatus
Annakolibri
Rufous Hummingbird
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 Hummingbird
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 Hummingbird
A small hummingbird (8-9 cm) known for its extraordinary migration, traveling up to 6,400 km between breeding grounds in Alaska and wintering areas in Mexico. Males have a brilliant orange-red gorget. The longest migration relative to body size of any bird.