Violet-tailed Sylph vs Golden-bellied Starfrontlet
Aglaiocercus coelestis 比較対象 Coeligena bonapartei
Side-by-Side Comparison
| 属性 | Violet-tailed Sylph | Golden-bellied Starfrontlet |
|---|---|---|
| 学名 | Aglaiocercus coelestis | Coeligena bonapartei |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 12.4 cm (4.9 in) | 15.0 cm (5.9 in) |
| 体重 | 5.483333333333334 g (0.19 oz) | 6.800000000000001 g (0.24 oz) |
| 食性 | Nectarivore with elongated tail foraging at diverse montane flowers. Catches small arthropods near flowering bromeliads. | Nectarivore of Colombian and Venezuelan cloud forest; forages at Ericaceae and Clusia. Takes small insects … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Violet-tailed Sylph
Sharp, emphatic two-note call; first note high and accented, second softer and brief, delivered at measured pace.
Golden-bellied Starfrontlet
High, crystalline twittering with silvery sheen; rapid light notes cascading brightly in active display sequences.
Geographic Range & Migration
Violet-tailed Sylph
Found on the western Andean slope and Pacific foothills of Colombia and Ecuador in humid forest. 300–1,600 m.
Golden-bellied Starfrontlet
Found in cloud forest of the eastern Andes of Colombia and western Venezuela at 1,800–2,800 m.
保全状況
Violet-tailed Sylph
Golden-bellied Starfrontlet
How to Tell Them Apart
Violet-tailed Sylph
Allen's Hummingbird: males with brilliant copper-orange back; glittering red-orange gorget; green crown; females green above with rufous
Golden-bellied Starfrontlet
Green-headed Hillstar: males with glittering green head; metallic green above; white underparts; females green above; spotted buff below
About These Birds
Violet-tailed Sylph
A spectacular hummingbird (10 cm body + 13 cm tail in males) endemic to the western Andes of Colombia and Ecuador at 1,000-2,500 m. Males have dazzling violet-blue outer tail streamers. Nectarivore of cloud forest and forest edges. Replaced by Long-tailed Sylph east of the Andes.
Golden-bellied Starfrontlet
A medium-sized hummingbird (13-14 cm) found in Andean cloud forests from Venezuela to Colombia at 1,800-3,200 m. Males have a golden-yellow belly and iridescent green forehead. Nectarivore of montane forest and forest edges.