American Crow vs Northern Fulmar
Corvus brachyrhynchos so với Fulmarus glacialis
Side-by-Side Comparison
| Thuộc Tính | American Crow | Northern Fulmar |
|---|---|---|
| Tên Khoa Học | Corvus brachyrhynchos | Fulmarus glacialis |
| Bộ | Passeriformes | Procellariiformes |
| Họ | Corvidae | Procellariidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 45,0 cm (17.7 in) | 47,0 cm (18.5 in) |
| Chiều Dài Sải Cánh | 99,0 cm (39.0 in) | 107,0 cm (42.1 in) |
| Khối Lượng | 450,0 g (15.87 oz) | 750,0 g (26.46 oz) |
| Chế Độ Ăn | Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among … | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. |
| Số Trứng | 3-7 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Không
American Crow only
Northern Fulmar only
Không
American Crow
Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.
Northern Fulmar
Open ocean and sea cliffs. Breeds on cliff ledges and grassy slopes on northern coastlines. Pelagic outside breeding season.
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.
Northern Fulmar
A nasal, cackling 'kak-kak-kak-kak' or grunting 'uh-uh-uh' at the nest and colony. Less melodic than petrels. In flight gives occasional single nasal calls.
Geographic Range & Migration
American Crow
North America from southern Canada through the United States to northern Mexico.
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Tình Trạng Bảo Tồn
American Crow
Northern Fulmar
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
Northern Fulmar
Light morph: white head and underparts with grey wings and back. Dark morph: entirely grey. Tube-nosed bill and stiff-winged flight distinctive at sea.
Yellowish hooked bill with prominent tubular nostrils on top
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.
Northern Fulmar
The northern fulmar is a long-lived seabird that can survive over 40 years. It defends its nest by projectile-vomiting a foul-smelling stomach oil at intruders, which can mat the feathers of predators and cause fatal loss of waterproofing. Fulmars have expanded their breeding range dramatically southward over the past two centuries.