Annakolibri vs Tepui Goldenthroat
Calypte anna verglichen mit Polytmus milleri
Side-by-Side Comparison
| Merkmal | Annakolibri | Tepui Goldenthroat |
|---|---|---|
| Wissenschaftlicher Name | Calypte anna | Polytmus milleri |
| 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) | 12,8 cm (5.0 in) |
| Gewicht | 4,3 g (0.15 oz) | 4,76 g (0.17 oz) |
| Ernährung | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore visiting tepui shrub flowers and lowland grasses. Supplements nectar with small arthropods gleaned from … |
| 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.
Tepui Goldenthroat
Pure, bell-like tone with long resonance; single clear note ringing out then slowly fading in open woodland.
Geographic Range & Migration
Annakolibri
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Tepui Goldenthroat
Found on tepui plateaus of Venezuela and adjacent Guyana and Brazil in open highland vegetation. 1,200–2,800 m.
Erhaltungsstatus
Annakolibri
Tepui Goldenthroat
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
Tepui Goldenthroat
Rufous-throated Sapphire: males with shining rufous throat; bronze-green back; white pectoral tufts; females green above with rufous throat
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.
Tepui Goldenthroat
A medium-sized hummingbird (10-11 cm) endemic to the tepui highlands of southern Venezuela and adjacent Guyana. Green plumage with a golden throat. Nectarivore of tepui scrub and forest edges. Restricted to the Pantepui region above 1,000 m. Poorly known.