Tuesday, October 27, 2020

Population size, breeding frequency and survival of Salvin's albatrosses (Thalassarche salvini) at the Western Chain, The Snares, New Zealand

TitlePopulation size, breeding frequency and survival of Salvin's albatrosses (Thalassarche salvini) at the Western Chain, The Snares, New Zealand
Publication TypeJournal Article
Year of Publication2011
AuthorsSagar, PM, Charteris, MR, Carroll, JWA, Scofield, RP
JournalNotornis
Volume58
Issue2
Pagination57-63
Type of ArticleFull article
Keywordspopulation size, Salvin's albatross, survival, Thalassarche salvini, The Snares
Abstract

We investigated the population size and annual survival of Salvin’s albatrosses (Thalassarche salvini) breeding at the Western Chain, The Snares, New Zealand. A count of breeding pairs during incubation resulted in totals of 1100-1200 breeding annually on Toru and Rima Islets in the 3 years 2008-2010; none was seen breeding on Tahi, Rua or Wha Islets.The majority of adults bred annually. Based on banding and recapture the annual survival probability of breeding birds was estimated to be 0.967 while that of known-age birds banded as chicks in Feb 1986 was estimated at 0.939. A bird banded as a chick on the Bounty Is in 1985 was found breeding on Toru Islet of the Western Chain in the 3 years 2008-2010. This is the first record of a banded Salvin’s albatross breeding away from its natal island.

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