Pachyptila crassirostris
The Fulmar Prion, *Pachyptila crassirostris*, is a compact and robust member of the Procellariidae family, measuring approximately 25-26 cm in length with a wingspan of 55-60 cm and weighing 120-180 grams. Its plumage is characterized by a soft blue-grey on the upperparts, contrasting sharply with clean white underparts, and a distinctive dark 'M' marking across its upperwings, a common feature among many prions. A dark cap extends below the eye, completing its oceanic camouflage. Its most de...
This pelagic seabird primarily inhabits cold, sub-Antarctic ocean waters, breeding colonially on remote, predator-free offshore islands and rock stacks.
Their diet consists almost exclusively of zooplankton, including crustaceans (such as copepods, euphausiids, and amphipods), small squid, and occasionally small fish, all sieved from the ocean surface using their specialized lamellated bill.
Fulmar Prions exhibit a classic petrel daily rhythm: they are highly nocturnal at their breeding colonies to minimize predation risk from skuas and gulls, but forage diurnally at sea. Foraging is a highly specialized activity, primarily involving surface-seizing and filter-feeding, where they ski...
The Fulmar Prion is endemic to the New Zealand sub-Antarctic islands, with its breeding distribution tightly confined to a few remote island groups. The subspecies *Pachyptila crassirostris crassirostris* breeds predominantly on the Bounty Islands (hosting the largest known colony), the Antipodes...
Least Concern
- The name 'Prion' comes from the Greek word for 'saw', referring to the unique comb-like lamellae inside their bills, which they use to filter-feed. - Their highly specialized bill allows them to efficiently strain vast quantities of zooplankton, making them 'living sieves' of the Southern Ocean...