Great Cormorant vs Auckland Islands Shag
Phalacrocorax carbo 比較対象 Leucocarbo colensoi
Side-by-Side Comparison
| 属性 | Great Cormorant | Auckland Islands Shag |
|---|---|---|
| 学名 | Phalacrocorax carbo | Leucocarbo colensoi |
| 目 | Suliformes | Suliformes |
| 科 | Phalacrocoracidae | Phalacrocoracidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | 90.0 cm (35.4 in) | — |
| 翼開長 | 145.0 cm (57.1 in) | 54.7 cm (21.5 in) |
| 体重 | 2600.0 g (91.71 oz) | 2000.0 g (70.55 oz) |
| 食性 | Fish caught by diving from the surface. Pursues prey underwater using powerful feet for propulsion. … | -- |
| 一腹卵数 | 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.
Auckland Islands Shag
Geographic Range & Migration
Great Cormorant
Very wide range across Europe, Asia, Africa, and Australasia. One of the most widespread cormorant species.
Auckland Islands Shag
保全状況
Great Cormorant
Auckland 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
Auckland 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.
Auckland Islands Shag
63 cm. Black and white; orange caruncles. Endemic to Auckland Islands, New Zealand subantarctic. Vulnerable; total population estimated at only a few thousand. Feeds on fish and invertebrates in surrounding cold ocean waters. Non-migratory; restricted to the island group.