References
- Barrowclough , G. F. 1980 . Gene flow, effective population sizes and genetic variance components in birds. . Evolution , 34 : 789 – 798 .
- Brooke , M. de L. 1978 . The dispersal of female Manx Shearwaters . Puffinus puffinus. Ibis , 120 : 545 – 551 .
- Chabryzyk , G. and Coulson , J. C. 1976 . Survival and recruitment in the Herring Gull . Larus argentatus. J. Anim. Ecol , 45 : 187 – 203 .
- Cooper , J. 1972 . Sexing the Jackass Penguin. . SAFRING News , 10 : 23 – 25 .
- Crawford , R. J. M. 1981 . Distribution, availability and movements of anchovy Engraulis capensis off South Africa, 1964–1976. . Fish Bull. S. Afr , 14 : 51 – 94 .
- Crawford , R. J.M. and Shelton , P. A. 1981 . “ Population trends for some southern African seabirds related to fish availability. ” . In Proceedings of the Symposium on the Birds of the Sea and Shore: 15–41 Edited by: Cooper , J. Ca Town : African Seabird Group. .
- Harris , M. P. 1983 . Biology and survival of the immature Puffin . Fratercula arctica. Ibis , 125 : 56 – 73 .
- James , F. C. , Engstrom , R. T. , Nesmith , C. and Lay-Bourne , R. 1984 . Inferences about population movements of Red-wined Blackbirds from morphological data. . Am. Midl. bat , 111 : 31S 331
- Kimura , M. and Weiss , G. H. 1964 . The stepping stone model of population structure and the decrease of genetic correlation with distance. . Genetics , 49 : 561 – 576 .
- Rand , R. W. 1963 . The biology of guano-producing sea-birds. 4. Composition of colonies on the Cape Islands. . Investl. Rep. Div. Sea Fish. S. Afr , 43 : 1 – 32 .
- Shelton , P. A. , Crawford , R. J. M. , Cooper , J. and Brooke , R. K. 1984 . Distribution, population size and conservation of the Jackass Penguin . Spheniscus demersus. S. Afr. J. mar. Sci , 2 : 217 – 2 . !7
- Sokal , R. R. and Sneath , P. H. 1963 . Principles of numerical taxonomy San Francisco : Freeman. .
- Sokal , R. R. and Rohlf , J. 1969 . Biometry San Francisco : Freeman. .
- Southwood , T. R. E. 1976 . “ Bionomic strategies and population parameters ” . In Theoretical Ecology Edited by: May , R. M. 30 – 52 . Oxford : Blackwells .
- Williams , A. J. and Cooper , J. 1984 . Aspects of the breeding biology of the Jackass Penguin . Spheniscus demersus. Proc. V Pan Afr. Ornith. Congr , : 891 – 883 .