Numbers of breeding seabirds on Pelsaert Island, Houtman Abrolhos, Western Australia

In December 1986, we visited Pelsaert Island, Houtman Abrolhos, Western Australia. and estimated 49,000 occupied breeding burrows of the Wedge-tailed Shearwater Puffinus pacificus, 76,000 current nests of the Common Noddy Anous stolidus and 30,000 current nests of the Lesser Noddy A. tenuirostris. It was not possible to count the Sooty Tern Sterna fuscata colony because breeding was too far advanced. It occupied nearly 12 ha and probably included at least as many nests as the Common Noddy colony.

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