Northern Fulmar vs Boyd's Shearwater
Fulmarus glacialis comparado com Puffinus boydi
Side-by-Side Comparison
| Atributo | Northern Fulmar | Boyd's Shearwater |
|---|---|---|
| Nome científico | Fulmarus glacialis | Puffinus boydi |
| Ordem | Procellariiformes | Procellariiformes |
| Família | Procellariidae | Procellariidae |
| Estado de conservação | Least Concern | Not Evaluated |
| Comprimento | 47,0 cm (18.5 in) | — |
| Envergadura | 107,0 cm (42.1 in) | — |
| Peso | 750,0 g (26.46 oz) | — |
| Dieta | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. | -- |
| Tamanho da postura | 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.
Boyd's Shearwater
Geographic Range & Migration
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Boyd's Shearwater
Estado de conservação
Northern Fulmar
Boyd's Shearwater
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
Boyd's Shearwater
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.
Boyd's Shearwater
27 cm. Dark brown above; white below; white face with dark eye-patch. Breeds Cape Verde Islands. Ranges in tropical east Atlantic. Closely related to Barolo Shearwater; both formerly grouped in Little Shearwater complex. Near Threatened; feeds on small fish and squid.