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Displaying results 1 - 19 of 19Click/tap on any title to see full details of the record
Crawford RJM, Makhado AB, Whittington PA, Randall RM, Oosthuizen WH, Waller LJ 2015. A changing distribution of seabirds in South Africa—the possible impact of climate and its consequences. Frontiers in Ecology and the Environment Review Article
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A changing distribution of seabirds in South Africa_2015.pdf 2.47 MB
Crawford RJM, Shelton PA, Cooper J, Brooke RK 2010. Distribution, population size and conservation of the Cape gannet Morus capensis. South African Journal of Marine Science 1 (1) 153-174
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Distribution_population size and conservation of the Cape gannet Morus capensis_2010.pdf 1.97 MB
Crawford RJM, Hemming M, Kemper J, Klages NTW, Randall RM, Underhill LG, Venter AD, Ward VL, Wolfaardt AC 2006. S24-2 Molt of the African penguin, Spheniscus demersus, in relation to its breeding season and food availability. Acta Zoologica Sinica 53 (Supplement) 444-447
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Crawford_2006_Acta_Zool_Sinica_Molt_Afrcn_Penguin.pdf 619.36 KB
Whittington PA, Randall RM, Randall BM, Wolfaardt AC, Crawford RJM, Klages NTW, Bartlett PA, Chesselet YJ, Jones R 2005. Patterns of movements of the African penguin in South Africa and Namibia. African Journal of Marine Science 27 (1) 215-229
Website link:http://www.tandfonline.com/doi/abs/10.2989/18142320509504080
Whittington PA, Randall RM, Crawford RJM, Wolfaardt AC, Klages NTW, Randall BM, Bartlett PA, Chesselet YJ, Jones R 2005. Patterns of immigration to and emigration from breeding colonies by African penguins. African Journal of Marine Science 27 (1) 205-213
Website link:http://www.ajol.info/index.php/ajms/article/view/33213
David JHM, Curry P, Crawford RJM, Randall RM, Underhill LG, Meÿer MA 2003. Assessing conservation priorities in the Benguela ecosystem, South Africa: analysing predation by seals on threatened seabirds. Biological Conservation 114 (2) 289-292
Website link:http://www.sciencedirect.com/science/article/pii/S0006320703000181
Crawford RJM, Williams AJ, Hofmeyr JH, Klages NTW, Randall RM, Cooper J, Dyer BM, Chesselet Y 1995. Trends of African Penguin Spheniscus demersus populations in the 20th-century. South African Journal of Marine Science 16 (1) 101-118
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Trends of African Penguin Spheniscus demersus populations in the 20th_century.pdf 1.28 MB
Berruti A, Underhill LG, Shelton PA, Moloney C, Crawford RJM 1993. Seasonal and interannual variation in the diet of 2 colonies of the Cape Gannet (Morus capensis) between 1977-78 and 1989. Colonial Waterbirds 16 1977 – 1978
Crawford RJM, Williams AJ, Randall RM, Randall BM, Berruti A, Ross GJB 1990. Recent population trends of Jackass Penguins Spheniscus demersus off southern Africa. Biological Conservation 52 (3) 229 – 243
Website link:http://www.sciencedirect.com/science/article/pii/000632079090128C
Crawford RJM, Cruickshank RA, Shelton PA, Kruger I 1985. Partitioning of a goby resource amongst four avian predators and evidence for altered trophic flow in the pelagic community of an intense perennial upwelling system. South African Journal of Science 3 (1) 215–228
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Partitioning of a goby resource amongst 4 avian predators.pdf 1.13 MB
Shelton PA, Crawford RJM, Cooper J, Brooke RK 1984. Distribution, population size and conservation of the Jackass Penguin Spheniscus demersus. South African Journal of Marine Science (2) 217 - 257
Downloadable files:
Attachment Size
Distribution_population size and conservation of the Jackass Penguin Spheniscus demersus.pdf 2.72 MB
Website link:http://www.tandfonline.com/doi/abs/10.2989/02577618409504370#.VIbEumctBHg
Crawford RJM, Shelton PA, Berruti A 1983. Cape Cormorants as potential indicators of pelagic fish stocks off southern Africa. South Africa Journal of Science 79 466-468
Cooper J, Brooke RK, Shelton PA, Crawford RJM 1982. Distribution, population size and conservation of the Cape Cormorant Phalacrocorax capensis. Fisheries Bulletin of South Africa 16 121 - 143
Website link:http://agris.fao.org/agris-search/search.do?recordID=US201302158405
Crawford RJM, Cooper J, Shelton PA 1982. Distribution, population size, breeding and conservation of the Kelp Gull in southern Africa. Ostrich: Journal of African Ornithology 53 (3) 164-177
Website link:http://www.tandfonline.com/doi/abs/10.1080/00306525.1982.9634747#.VSvNlmf9kpE
Brooke RK, Cooper J, Shelton PA, Crawford RJM 1982. Taxonomy, distribution, population size, breeding and conservation of the Whitebreasted Cormorant Phalacrocorax carbo on the southern African coast. Gerfaut 72 188-200
Website link:http://www.fitzpatrick.uct.ac.za/fitz/publications/scientific/archive/1982
Crawford RJM, Shelton PA, Brooke RK, Cooper J 1982. Taxonomy, distribution, population size and conservation of the Crowned Cormorant Phalacrocorax coronatus. Gerfaut 72 3 - 30
Crawford RJM, Shelton PA 1981. Population trends for some southern African seabirds related to fish availability. Proceedings of the Symposium on Birds of the Sea and Shore Cooper, J. 15-41
Crawford RJM, Cooper J, Shelton PA 1981. The breeding population of White Pelicans Pelecanus onocrotalus at Bird Rock platform in Walvis Bay, 1949-1978. Fisheries Bulletin of South Africa 15 67 - 70
Website link:http://www.adu.uct.ac.za/adu/projects/sea-shore-birds/sites/namibia/walvis-bay
Crawford RJM, Shelton PA, Batchelor AL, Clinning CF 1980. Observations on the mortality of juvenile Cape Cormorants Phalacrocorax capensis during 1975 and 1979. Fisheries Bulletin of South Africa (13) 69 - 75
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