White-tailed Goldenthroat vs Great Sapphirewing
Polytmus guainumbi 对比 Pterophanes cyanopterus
Side-by-Side Comparison
| 属性 | White-tailed Goldenthroat | Great Sapphirewing |
|---|---|---|
| 学名 | Polytmus guainumbi | Pterophanes cyanopterus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 11.8 cm (4.6 in) | 21.0 cm (8.3 in) |
| 体重 | 4.7 g (0.17 oz) | 10.05 g (0.35 oz) |
| 食性 | Nectarivore of grassland and savanna flowers, particularly Heliconia and grasses. Catches small insects near water … | Nectarivore of high Andean cloud forest and treeline; one of the largest hummingbirds. Visits Ericaceae … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-tailed Goldenthroat
Sharp, crackling chatter with percussive quality; rapid dry notes delivered emphatically near territorial boundary.
Great Sapphirewing
Buzzy, insect-like trill with pulsing rhythm; high-frequency vibration with slight amplitude modulation near flowers.
Geographic Range & Migration
White-tailed Goldenthroat
Widespread in open habitats, savannas, and forest edges across Trinidad and Venezuela south through Brazil to Bolivia and Argentina. 0–900 m.
Great Sapphirewing
Found in high Andean cloud forests and páramo from Colombia south through Ecuador and Peru to Bolivia. 2,400–3,800 m.
保护状况
White-tailed Goldenthroat
Great Sapphirewing
About These Birds
White-tailed Goldenthroat
A medium-sized hummingbird (11-12 cm) with golden-green throat and breast, found in open savannas and cerrado from Venezuela to Brazil, Bolivia, and Argentina. Long, slightly curved bill. Nectarivore of open country flowers. Named for its glittering golden throat plumage.
Great Sapphirewing
A large hummingbird (18 cm, wingspan 28 cm) found in Andean cloud forests from Colombia to Bolivia at 2,500-3,500 m. Brilliant sapphire-blue wings, green body, and long tail. One of the largest hummingbirds. Nectarivore of montane forest, visiting large-flowered Ericaceae.