oa African Zoology - Cephalopod beaks from the stomach of a jackass penguin Spheniscus demersus Linnaeus

Volume 2, Issue 1
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



Davies (1955, 1956, 1958), Rand (1960) and Matthews (1961) have shown that cephalopods form only 1 to 4 per cent by weight of the diet of the Jackass Penguin Spheniscus demersus. At certain times of the year, however, this percentage increases considerably; Rand (1960) counted up to 243 beaks in one stomach in June. Little quantitative work seems to have been done on cephalopods in the diet of S. demersus. It is therefore hoped that this study will help to fill the gap.

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