Jouanin's Petrel vs Northern Fulmar
Bulweria fallax в сравнении с Fulmarus glacialis
Side-by-Side Comparison
| Характеристика | Jouanin's Petrel | Northern Fulmar |
|---|---|---|
| Научное название | Bulweria fallax | Fulmarus glacialis |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Near Threatened | Least Concern |
| Длина | — | 47,0 cm (18.5 in) |
| Размах крыльев | 48,2 cm (19.0 in) | 107,0 cm (42.1 in) |
| Масса | 167,5 g (5.91 oz) | 750,0 g (26.46 oz) |
| Питание | -- | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. |
| Размер кладки | -- | 1 |
| Population Trend | — | — |
Size Comparison
Song & Call Comparison
Jouanin's 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
Jouanin's Petrel
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Охранный статус
Jouanin's Petrel
Northern Fulmar
How to Tell Them Apart
Jouanin's Petrel
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
About These Birds
Jouanin's Petrel
43–45 cm. Larger than Bulwer's Petrel; all sooty-brown with a wedge-shaped tail and faint pale wing-bar. Breeds southern Arabian Sea islands (Socotra region); ranges in Indian Ocean. Near Threatened; poorly studied. Feeds on squid and fish; crepuscular and nocturnal at sea.
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.