Annakolibri vs Red-billed Emerald
Calypte anna verglichen mit Chlorostilbon gibsoni
Side-by-Side Comparison
| Merkmal | Annakolibri | Red-billed Emerald |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Chlorostilbon gibsoni |
| 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) | 9,9 cm (3.9 in) |
| Gewicht | 4,3 g (0.15 oz) | 3,4 g (0.12 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on floral nectar in lowland Venezuelan scrub and forest. Gleans insects 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.
Red-billed Emerald
Harsh, buzzy chatter with urgency; rough staccato notes escalating quickly during competitive flower territory dispute.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Red-billed Emerald
Found in dry valleys and scrub of Colombia and Venezuela. Resident in arid and semi-arid habitats at low elevations.
Erhaltungsstatus
Annakolibri
Red-billed 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
Red-billed Emerald
Versicolored Emerald: males with glittering multicolored gorget; metallic green above; white underparts; females green above; 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.
Red-billed Emerald
A small hummingbird (8-9 cm) found in dry valleys and scrub of Colombia and Venezuela. Bright green plumage with a red bill with dark tip. Nectarivore of arid and semi-arid habitats. Named after the naturalist William Gibson.