Wedge-tailed Shearwater vs Northern Fulmar
Ardenna pacifica เปรียบเทียบกับ Fulmarus glacialis
Side-by-Side Comparison
| คุณสมบัติ | Wedge-tailed Shearwater | Northern Fulmar |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Ardenna pacifica | Fulmarus glacialis |
| อันดับ | Procellariiformes | Procellariiformes |
| วงศ์ตระกูล | Procellariidae | Procellariidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | 47.0 cm (18.5 in) |
| กว้างปีก | 59.4 cm (23.4 in) | 107.0 cm (42.1 in) |
| น้ำหนัก | 435.0 g (15.34 oz) | 750.0 g (26.46 oz) |
| อาหาร | -- | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. |
| จำนวนไข่ | 1 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Wedge-tailed Shearwater only
Northern Fulmar only
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Northern Fulmar
Open ocean and sea cliffs. Breeds on cliff ledges and grassy slopes on northern coastlines. Pelagic outside breeding season.
Song & Call Comparison
Wedge-tailed Shearwater
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
Wedge-tailed Shearwater
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
สถานะการอนุรักษ์
Wedge-tailed Shearwater
Northern Fulmar
How to Tell Them Apart
Wedge-tailed Shearwater
Northern Fulmar
Yellowish hooked bill with prominent tubular nostrils on top
About These Birds
Wedge-tailed Shearwater
38–46 cm, wingspan 97–105 cm. Long wedge-shaped tail diagnostic; dark brown above; polymorphic below (dark or white-breasted). Breeds tropical Pacific and Indian Ocean islands. Ranges widely at sea. Feeds on fish and squid; often associates with tuna. Common and widespread.
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.