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Counts of gulls on Otaki beach, North Island of New Zealand

Notornis, 10 (2), 80-83

K. Wodzicki (1962)

Article Type: Paper

Eleven counts of black-backed and red-billed gulls were carried out in March, 1961, on a seven miles long beach between the Otaki and Ohau rivers. Juvenile black-backed gulls amounted to a quarter of the population and the overall density was estimated at 29 black-backed and 17 red-billed gulls per mile.