Northern Fulmar vs Henderson Petrel
Fulmarus glacialis в сравнении с Pterodroma atrata
Side-by-Side Comparison
| Характеристика | Northern Fulmar | Henderson Petrel |
|---|---|---|
| Научное название | Fulmarus glacialis | Pterodroma atrata |
| Отряд | Procellariiformes | Procellariiformes |
| Семейство | Procellariidae | Procellariidae |
| Охранный статус | Least Concern | Endangered |
| Длина | 47,0 cm (18.5 in) | — |
| Размах крыльев | 107,0 cm (42.1 in) | 59,0 cm (23.2 in) |
| Масса | 750,0 g (26.46 oz) | 320,0 g (11.29 oz) |
| Питание | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. | -- |
| Размер кладки | 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.
Henderson Petrel
Geographic Range & Migration
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Henderson Petrel
Охранный статус
Northern Fulmar
Henderson Petrel
How to Tell Them Apart
Northern Fulmar
Yellowish hooked bill with prominent tubular nostrils on top
Henderson 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.
Henderson Petrel
36–38 cm. All-dark gadfly petrel; sooty-brown with slightly paler primary patch below. Breeds Henderson Island (Pitcairn Islands). Endangered; population estimated at 5,000–10,000 pairs but vulnerable to introduced rats. Ranges in South Pacific; feeds at night on squid.