American Crow vs Bismarck Crow
Corvus brachyrhynchos so với Corvus insularis
Side-by-Side Comparison
| Thuộc Tính | American Crow | Bismarck Crow |
|---|---|---|
| Tên Khoa Học | Corvus brachyrhynchos | Corvus insularis |
| Bộ | Passeriformes | Passeriformes |
| Họ | Corvidae | Corvidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 45,0 cm (17.7 in) | — |
| Chiều Dài Sải Cánh | 99,0 cm (39.0 in) | 62,5 cm (24.6 in) |
| Khối Lượng | 450,0 g (15.87 oz) | 486,0 g (17.14 oz) |
| Chế Độ Ăn | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | -- |
| Số Trứng | 3-7 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Song & Call Comparison
American Crow
Classic 'caw-caw-caw' repeated in series. Family groups use distinct dialects. Also gives rattling, knocking, and a short 'cah' flight call. Highly social and vocal.
Bismarck Crow
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Bismarck Crow
Tình Trạng Bảo Tồn
American Crow
Bismarck Crow
How to Tell Them Apart
American Crow
All black with a slight glossy sheen. Squared-off tail and smooth throat distinguish it from the common raven.
Straight, sturdy black bill smaller than a raven's
Bismarck Crow
About These Birds
American Crow
The American crow is one of North America's most familiar and intelligent birds. Research has shown they can recognize individual human faces and communicate perceived threats to other crows. They form large winter roosts of up to hundreds of thousands of individuals in some cities.
Bismarck Crow
The Bismarck Crow is a glossy black crow endemic to the Bismarck Archipelago and adjacent islands in Papua New Guinea. Like other crows, it is highly intelligent and omnivorous, feeding on carrion, fruits, invertebrates, and small vertebrates. It inhabits forest, forest edges, and coastal areas.