Ardenna
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Ardenna is a genus of seabirds in the family Procellariidae. These medium-sized shearwater species were formerly included in the genus Puffinus.
Image: Sooty shearwater kaikoura
Image: Puffinus tenuirostris 2
Puffinus
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Puffinus is a genus of seabirds in the order Procellariiformes that contains about 20 small to medium-sized shearwaters. Two other shearwater genera are named: Calonectris, which comprises three or four large shearwaters, and Ardenna with another seven species.
Image: Puffinus nat
Image: Manx Shearwater
Image: Ma Puffinus yelkouan