Great Cormorant vs Double-crested Cormorant
Phalacrocorax carbo so với Nannopterum auritum
Side-by-Side Comparison
| Thuộc Tính | Great Cormorant | Double-crested Cormorant |
|---|---|---|
| Tên Khoa Học | Phalacrocorax carbo | Nannopterum auritum |
| Bộ | Suliformes | Suliformes |
| Họ | Phalacrocoracidae | Phalacrocoracidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 90,0 cm (35.4 in) | — |
| Chiều Dài Sải Cánh | 145,0 cm (57.1 in) | — |
| Khối Lượng | 2600,0 g (91.71 oz) | 1936,0 g (68.29 oz) |
| Chế Độ Ăn | Fish caught by diving from the surface. Pursues prey underwater using powerful feet for propulsion. … | -- |
| Số Trứng | 1-7 | 3-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Great Cormorant only
Không
Double-crested Cormorant only
Không
Great Cormorant
Coasts, estuaries, lakes, rivers, and reservoirs. Nests in colonies in trees, on cliffs, or on the ground.
Song & Call Comparison
Great Cormorant
Deep, guttural grunts and 'karrr' calls at colonies. Bill-clicking and hissing in threat displays. Silent at sea. Colonial noise can be deafening during the breeding season.
Double-crested Cormorant
Geographic Range & Migration
Great Cormorant
Very wide range across Europe, Asia, Africa, and Australasia. One of the most widespread cormorant species.
Double-crested Cormorant
Tình Trạng Bảo Tồn
Great Cormorant
Double-crested Cormorant
How to Tell Them Apart
Great Cormorant
All black with a bronze-green gloss. White throat patch and white thigh patches in breeding season. Yellow-orange face patch around the bill base.
Long, hooked, dark bill with a yellow gape
Double-crested Cormorant
About These Birds
Great Cormorant
The great cormorant is one of the most widespread seabirds in the world. Unlike most waterbirds, cormorants lack fully waterproof plumage, leading to the iconic pose of standing with wings spread open to dry. In Asia, cormorants have been used by fishermen to catch fish for over a thousand years.
Double-crested Cormorant
70–90 cm, wingspan 114–123 cm. Dark with two small orange ear tufts in breeding; orange-yellow facial skin. Widespread across North America and Central America. Highly adaptable; colonial nester. Controversial where it competes with commercial fisheries; feeds almost exclusively on fish.