Northern Fulmar vs Black-capped Petrel
Fulmarus glacialis مقارنةً بـ Pterodroma hasitata
Side-by-Side Comparison
| السمة | Northern Fulmar | Black-capped Petrel |
|---|---|---|
| الاسم العلمي | Fulmarus glacialis | Pterodroma hasitata |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Least Concern | Endangered |
| الطول | 47,0 cm (18.5 in) | — |
| طول الجناح | 107,0 cm (42.1 in) | 56,6 cm (22.3 in) |
| الوزن | 750,0 g (26.46 oz) | 443,8333333333333 g (15.66 oz) |
| النظام الغذائي | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. | -- |
| عدد البيض في الوضع | 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.
Black-capped Petrel
Geographic Range & Migration
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Black-capped Petrel
حالة الحفاظ
Northern Fulmar
Black-capped Petrel
How to Tell Them Apart
Northern Fulmar
Yellowish hooked bill with prominent tubular nostrils on top
Black-capped 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.
Black-capped Petrel
40 cm. Large gadfly petrel; dark cap and upperparts, white underparts with dark carpal bar. Breeds Hispaniola and Cuba; once very abundant. Endangered; longline bycatch and habitat loss are key threats. Ranges widely in western and central Atlantic; crepuscular at colonies.