Annakolibri vs Brace's Emerald
Calypte anna verglichen mit Riccordia bracei
Side-by-Side Comparison
| Merkmal | Annakolibri | Brace's Emerald |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Riccordia bracei |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Trochilidae | Trochilidae |
| Erhaltungsstatus | Least Concern | Extinct |
| Länge | 10,0 cm (3.9 in) | — |
| Flügelspannweite | 12,0 cm (4.7 in) | — |
| Gewicht | 4,3 g (0.15 oz) | 3,54 g (0.12 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Extinct emerald; was a nectarivore of Bahamian scrub, likely visiting flowering shrubs and supplementing with … |
| Gelegegröße | 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.
Brace's Emerald
Soft, melodic warbling with gentle rhythm; notes rising and falling in quiet unhurried phrase through shaded area.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Brace's Emerald
Formerly endemic to New Providence Island, Bahamas. Extinct since the late 19th century. Known from a single 1877 specimen.
Erhaltungsstatus
Annakolibri
Brace's 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
Brace's Emerald
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.
Brace's Emerald
An extinct hummingbird formerly endemic to New Providence Island, Bahamas. Known from a single specimen collected in 1877. Green plumage. Lost to habitat destruction and possibly predation by introduced mammals. No confirmed sightings since the 19th century.