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The Timing of Moult in Relation To Age, Sex and Breeding Status in a Group of Captive Humboldt Penguins (Spheniscus Humboldti) At Emmen Zoo, the Netherlands

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image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

Data, for the years 1983-1988, are presented for the timing of moult in individual Humboldt penguins (Spheniscus humboldti) at Emmen Zoo, the Netherlands. Moult started soon after the solstice in June, juveniles moulting first. Adult males normally moulted earlier than adult females. Young females, which did not lay eggs or laid only one, moulted early in the season, as did older females, which laid two or more eggs. Old(er) females which did not lay eggs or only one, moulted late in the season or not at all. The timing of the egg-laying appeared to affect the timing of the moult. Age, sex and breeding status influence the timing of moult in captive Humboldt penguins.

Affiliations: 1: Pastoriepad 7, 9993 TL Westerwijtwerd, The Netherlands


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