Chestnut-collared Swift vs White-naped Swift
Streptoprocne rutila เปรียบเทียบกับ Streptoprocne semicollaris
Side-by-Side Comparison
| คุณสมบัติ | Chestnut-collared Swift | White-naped Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Streptoprocne rutila | Streptoprocne semicollaris |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 26.0 cm (10.2 in) | 44.4 cm (17.5 in) |
| น้ำหนัก | 21.8 g (0.77 oz) | 175.0 g (6.17 oz) |
| อาหาร | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … | Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude. |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
White-naped Swift
Very loud screaming trill; deep, powerful 'shreee' from Mexico's largest swift; calls over cliffs and canyons; impressive volume; deeper than White-collared Swift
Geographic Range & Migration
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
White-naped Swift
Endemic to Mexico from Nayarit south to Oaxaca. Found in montane forest and canyons at 1,000–3,000 m. Nests behind waterfalls.
สถานะการอนุรักษ์
Chestnut-collared Swift
White-naped Swift
How to Tell Them Apart
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 …
White-naped Swift
Very large; entirely black with white patch restricted to nape only, not forming a full collar; large square tail; Mexican endemic and the largest swift in Middle America; white nape …
About These Birds
Chestnut-collared Swift
A small swift (13-14 cm) found from Mexico through Central America and South America to Bolivia and Brazil. Dark plumage with a distinctive chestnut collar and throat. Aerial insectivore, often foraging in mixed-species swift flocks over forests and highlands.
White-naped Swift
A large swift (20-22 cm) endemic to Mexico, found in montane regions from Nayarit to Guerrero. Dark plumage with a white half-collar on the nape. Aerial insectivore, foraging over pine-oak forests and barrancas. Nests in large cave colonies. Near Threatened due to limited range.