Annakolibri vs Green Thorntail
Calypte anna verglichen mit Discosura conversii
Side-by-Side Comparison
| Merkmal | Annakolibri | Green Thorntail |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Discosura conversii |
| 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) | 8,4 cm (3.3 in) |
| Gewicht | 4,3 g (0.15 oz) | 3,0 g (0.11 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore visiting small flowers at forest canopy and edges. Forages in groups at flowering trees; … |
| 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.
Green Thorntail
Pure, sustaining tone with bell-like quality; single clear note ringing firmly then slowly diminishing in open air.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Green Thorntail
Found in foothill and lower montane forest from Costa Rica south through Colombia and Ecuador to Peru. 300–1,500 m.
Erhaltungsstatus
Annakolibri
Green Thorntail
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 Thorntail
Purple-backed Sunbeam: males with glittering emerald gorget; brilliant purple back; metallic green crown; females plain green with 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.
Green Thorntail
A tiny hummingbird (7-8 cm) with a long, wire-like tail extending to 10 cm total in males. Brilliant green plumage with white rump band. Found in humid forests from Costa Rica to western Ecuador. Nectarivore of forest canopy, hovering at tiny flowers. Fairy-like flight.