Claim: Ardenna includes species of birds such as the Wedge-tailed shearwater which is sometimes referred to as a muttonbird, like the sooty shearwater and the short-tailed shearwater.
Evidence: The genus contains these seven living species: Wedge-tailed shearwater It is one of the shearwater species that is sometimes referred to as a muttonbird, like the sooty shearwater of New Zealand and the short-tailed shearwater of Australia.