Great Cormorant vs Chatham Islands Shag
Phalacrocorax carbo 비교 대상 Leucocarbo onslowi
Side-by-Side Comparison
| 속성 | Great Cormorant | Chatham Islands Shag |
|---|---|---|
| 학명 | Phalacrocorax carbo | Leucocarbo onslowi |
| 목 | Suliformes | Suliformes |
| 과 | Phalacrocoracidae | Phalacrocoracidae |
| 보전 상태 | Least Concern | Critically Endangered |
| 체장 | 90.0 cm (35.4 in) | — |
| 날개 폭 | 145.0 cm (57.1 in) | 51.8 cm (20.4 in) |
| 체중 | 2600.0 g (91.71 oz) | 2095.0 g (73.90 oz) |
| 식성 | Fish caught by diving from the surface. Pursues prey underwater using powerful feet for propulsion. … | -- |
| 산란 수 | 1-7 | 3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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.
Chatham Islands Shag
Geographic Range & Migration
Great Cormorant
Very wide range across Europe, Asia, Africa, and Australasia. One of the most widespread cormorant species.
Chatham Islands Shag
보전 상태
Great Cormorant
Chatham Islands Shag
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
Chatham Islands Shag
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.
Chatham Islands Shag
63 cm. Black and white; orange-red caruncles at bill base. Endemic to Chatham Islands, New Zealand. Critically Endangered; total population fewer than 1,000 birds. Restricted to a few Chatham Islands colonies; feeds on fish and invertebrates in surrounding coastal waters.