White-fronted Swift vs Chestnut-collared Swift
Cypseloides storeri 对比 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | White-fronted Swift | Chestnut-collared Swift |
|---|---|---|
| 学名 | Cypseloides storeri | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Data Deficient | Least Concern |
| 体长 | — | — |
| 翼展 | 27.4 cm (10.8 in) | 26.0 cm (10.2 in) |
| 体重 | 39.25 g (1.38 oz) | 21.8 g (0.77 oz) |
| 食性 | Obligate aerial insectivore; takes small flies, beetles, and aerial spiders in swooping fast-flight passes. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 产卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-fronted Swift
Poorly known vocalizations; thin twittering presumed; calls over Mexican montane waterfalls; high-pitched soft chip notes; very rarely documented; data-deficient species
Chestnut-collared Swift
High, screaming trill; rapid 'scree-scree' in flight; shrill and penetrating; calls over Neotropical mountains and canyon edges; alarm a rapid screeching chatter
Geographic Range & Migration
White-fronted Swift
Endemic to western Mexico from Jalisco to Oaxaca. Resident in forested highlands near canyon streams at 1,000–2,500 m. Poorly known.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
保护状况
White-fronted Swift
Chestnut-collared Swift
How to Tell Them Apart
White-fronted Swift
Blackish-brown throughout with a prominent white frontal patch on forehead and lores; no other pale markings; slightly paler brownish below; poorly known Mexican endemic known from very few specimens.
Chestnut-collared Swift
Dark blackish-brown body with diagnostic rich chestnut collar encircling entire neck; collar bold and complete; underparts slightly paler brown; small swift with striking warm-toned neck band contrasting vividly with dark …
About These Birds
White-fronted Swift
斯托勒雨燕栖息于墨西哥西部山地，是分布有限的稀有雨燕。
Chestnut-collared Swift
栗领雨燕栖息于中美洲和南美洲北部的山地。