Journal
NEW ZEALAND JOURNAL OF ZOOLOGY
Volume 31, Issue 2, Pages 133-147Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03014223.2004.9518367
Keywords
yellow-eyed penguin; life history parameters; breeding success; breeding frequency; skipping breeding seasons; annual survival
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Two breeding locations of the endangered yellow-eyed penguin (Megadyptes antipodes), were monitored for six seasons between 1991 and 1996 to assess breeding success, breeding frequency, and survival parameters. Breeding success was inversely related to the total number of nests, suggesting that an influx of inexperienced breeders decreases the average breeding success. The proportions of males not breeding at either location in a season ranged from 0 to 13%, and 0 and 23% for females. Between 75 and 92% of breeders were recorded breeding in two consecutive seasons, while between 0 and 6% of breeders skipped one season and 9% of females (but no males) skipped two consecutive seasons. Annual survival averaged 90% for both breeding locations for four seasons (males 93%, females 90%).
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