Small Saint Helena Petrel vs Northern Fulmar
Bulweria bifax เปรียบเทียบกับ Fulmarus glacialis
Side-by-Side Comparison
| คุณสมบัติ | Small Saint Helena Petrel | Northern Fulmar |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Bulweria bifax | Fulmarus glacialis |
| อันดับ | Procellariiformes | Procellariiformes |
| วงศ์ตระกูล | Procellariidae | Procellariidae |
| สถานะการอนุรักษ์ | Extinct | Least Concern |
| ความยาว | — | 47.0 cm (18.5 in) |
| กว้างปีก | — | 107.0 cm (42.1 in) |
| น้ำหนัก | 167.17 g (5.90 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
Song & Call Comparison
Small Saint Helena Petrel
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
Small Saint Helena Petrel
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
สถานะการอนุรักษ์
Small Saint Helena Petrel
Northern Fulmar
How to Tell Them Apart
Small Saint Helena Petrel
Northern Fulmar
Yellowish hooked bill with prominent tubular nostrils on top
About These Birds
Small Saint Helena Petrel
Extinct; known only from subfossil bones from St. Helena Island. Smaller than Bulwer's Petrel; went extinct shortly after human settlement of St. Helena, likely from introduced predators. Part of the endemic St. Helena seabird community that was largely extirpated by human arrival.
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.