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Fulmar Prion vs Broad-billed Prion

Fulmar Prion
VS
Broad-billed Prion

Both prions share the same general body plan, but their bills point to two very different feeding strategies.

Fulmar Prion Broad-billed Prion
Scientific name Pachyptila crassirostris Pachyptila vittata
Bill shape Stockier and thicker, with fewer lamellae The broadest, most densely comb-lined bill
Feeding style Catches individual prey items Filters plankton in bulk, whale-like
Size Not the largest prion The largest prion species
Breeding range Chatham, Bounty, and Snares Islands, plus Heard Island New Zealand subantarctic islands, Tristan da Cunha, Gough
Conservation status Least Concern Least Concern
Population trend Stable Stable
Habitat Ocean, coastal Ocean, coastal

Fulmar Prion vs Broad-billed Prion: common questions

Which one has a stockier bill?

The fulmar prion has the stockier, thicker bill, with fewer comb-like lamellae than the broad-billed prion, an adaptation suited to catching individual prey items instead.

Which one filters plankton in bulk?

The broad-billed prion feeds this way, using its unusually wide, comb-lined bill to strain plankton from seawater in a manner functionally similar to a filter-feeding baleen whale.

Which one is named for its resemblance to a different seabird?

The fulmar prion is named this way, its relatively heavy-set bill shape resembling that of fulmars, larger tube-nosed seabirds unrelated to the broad-billed prion.

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