Cory's Shearwater vs Northern Fulmar
Calonectris borealis 比較対象 Fulmarus glacialis
Side-by-Side Comparison
| 属性 | Cory's Shearwater | Northern Fulmar |
|---|---|---|
| 学名 | Calonectris borealis | Fulmarus glacialis |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 47.0 cm (18.5 in) |
| 翼開長 | 69.4 cm (27.3 in) | 107.0 cm (42.1 in) |
| 体重 | 787.5 g (27.78 oz) | 750.0 g (26.46 oz) |
| 食性 | -- | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Size Comparison
Body Length
Cory's Shearwater
—
Northern Fulmar
47.0 cm
翼開長
Cory's Shearwater
69.4 cm
Northern Fulmar
107.0 cm
体重
Cory's Shearwater
787.5 g
Northern Fulmar
750.0 g
Song & Call Comparison
Cory's Shearwater
Northern Fulmar
さえずり
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
Cory's Shearwater
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
保全状況
Least Concern
Cory's Shearwater
Least Concern
Northern Fulmar
How to Tell Them Apart
Cory's Shearwater
Northern Fulmar
くちばし
Yellowish hooked bill with prominent tubular nostrils on top
About These Birds
Cory's Shearwater
体長46〜56cmのミズナギドリ。マカロネシアで繁殖し、南大西洋に渡る。
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.