Northern Fulmar vs Stejneger's Petrel
Fulmarus glacialis 比較対象 Pterodroma longirostris
Side-by-Side Comparison
| 属性 | Northern Fulmar | Stejneger's Petrel |
|---|---|---|
| 学名 | Fulmarus glacialis | Pterodroma longirostris |
| 目 | Procellariiformes | Procellariiformes |
| 科 | Procellariidae | Procellariidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | 47.0 cm (18.5 in) | — |
| 翼開長 | 107.0 cm (42.1 in) | 42.4 cm (16.7 in) |
| 体重 | 750.0 g (26.46 oz) | 140.5 g (4.96 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
Habitat Comparison
Northern Fulmar
Open ocean and sea cliffs. Breeds on cliff ledges and grassy slopes on northern coastlines. Pelagic outside breeding season.
Song & Call Comparison
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.
Stejneger's Petrel
Geographic Range & Migration
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Stejneger's Petrel
保全状況
Northern Fulmar
Stejneger's Petrel
How to Tell Them Apart
Northern Fulmar
Light morph: white head and underparts with grey wings and back. Dark morph: entirely grey. Tube-nosed bill and stiff-winged flight distinctive at sea.
Yellowish hooked bill with prominent tubular nostrils on top
Stejneger's Petrel
About These Birds
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.
Stejneger's Petrel
26 cm. Small gadfly petrel; pale grey above with dark M-mark; white below with dark partial collar and carpal bar. Breeds Juan Fernandez Islands (Chile); migrates to North Pacific. Vulnerable; closely related to Cook's Petrel; distinguished by slightly longer bill.