Annakolibri vs Booted Racket-tail
Calypte anna verglichen mit Ocreatus underwoodii
Side-by-Side Comparison
| Merkmal | Annakolibri | Booted Racket-tail |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Ocreatus underwoodii |
| 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) | 8,5 cm (3.3 in) |
| Gewicht | 4,3 g (0.15 oz) | 2,8 g (0.10 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Andean foothill forest; visits Ericaceae and Heliconia flowers. Catches small insects in aerial … |
| 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.
Booted Racket-tail
Melodic, rolling phrase with liquid quality; warm bubbly notes tumbling in pleasant continuous musical sequence.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Booted Racket-tail
Widespread in Andean foothill and cloud forests from Venezuela south through Colombia, Ecuador, and Peru. 200–1,800 m.
Erhaltungsstatus
Annakolibri
Booted Racket-tail
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
Booted Racket-tail
Blue-throated Starfrontlet: males with glittering blue gorget; metallic bronze-green; females green above; spotted buff underparts
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.
Booted Racket-tail
A small hummingbird (8-10 cm plus 5-7 cm tail rackets in males) widely distributed in Andean cloud forests from Venezuela to Bolivia at 1,500-3,000 m. Males have long, wire-like outer tail feathers ending in dark blue racket tips and fluffy white leg puffs. A cloud forest icon.