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Displaying results 1 - 18 of 18Click/tap on any title to see full details of the record
Sherley RB, Makhado AB, Crawford RJM, Hagen C, Kemper J, Ludynia K, Masotla MJ, McInnes A, Pichegru L, Tom D, Upfold L, Waller LJ 2024. The African Penguin Spheniscus demersus should be considered Critically Endangered. Ostrich 95 (3)
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The African Penguin Spheniscus demersus should be considered Critically Endangered.pdf 670.38 KB
Dyer BM, Cooper J, Crawford RJM, Sherley RB, Somhlaba S, Cockcroft A, Upfold L, Makhado AB 2020. Geographical and temporal variation in the diet of Bank Cormorants Phalacrocorax neglectus in South Africa. Ostrich 90 (4) 373-390
Website link:https://www.ajol.info/index.php/ostrich/article/view/192097
Sherley RB, Crawford RJM, de Blocq AD, Dyer BM, Geldenhuys D, Hagen C, Kemper J, Makhado AB, Pichegru L, Upfold L, Visagie J, Waller LJ, Winker H 2020. The conservation status and population decline of the African penguin deconstructed in space and time. Ecology and Evolution 10 (15) 8506-8516
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The conservation status and population decline of the African penguin deconstructed in space and time.pdf 965.34 KB
Sherley RB, Crawford RJM, Dyer BM, Kemper J, Makhado AB, Masotla M, Pichegru L, Pistorius PA, Roux J-P, Ryan PG, Tom D, Upfold L, Winker H 2019. The status and conservation of the Cape Gannet Morus capensis. Ostrich 90 (4) 335-346
Website link:https://www.ajol.info/index.php/ostrich/article/view/192070
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, Dyer BM, Kemper J, Simmons RE, Upfold L 2007. Trends in numbers of Cape Cormorants (Phalacrocorax capensis) over a 50-year period, 1956-57 to 2006-08. Emu 107 1 - 9
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Trends in numbers of Cape Cormorants.pdf 253.71 KB
Crawford RJM, Underhill LG, Upfold L, Dyer BM 2007. An altered carrying capacity of the Benguela upwelling ecosystem for African penguins (Spheniscus demersus). ICES Journal of Marine Science 64 570-576
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An altered carrying capacity of the Benguela upwelling ecosystem for African penguins.pdf 229.47 KB
Oschadleus HD, Dyer BM, Crawford RJM, Upfold L 2003. Sociable Weaver roadside nest densities in southern Namibia. Lanioturdus 36 (3) 12-17
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Sociable Weaver roadside nest densities in southern Namibia.pdf 301.93 KB
Crawford RJM, Cooper J, Dyer BM 1995. Conservation of an increasing population of Great White Pelicans Pelecanus onocrotalus in South Africa's Western Cape. South African Journal of Marine Science 15 33-42
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Conservation of an increasing population of Great White Pelicans Pelecanus onocrotalus in South Africas Western Cape.pdf 859.32 KB
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
Williams AJ, Steele WK, Cooper J, Crawford RJM 1990. Distribution, population-size and conservation of Hartlaub's Gull Larus hartlaubii. Ostrich: Journal of African Ornithology 61 (1-2) 66 – 76
Website link:http://www.tandfonline.com/doi/abs/10.1080/00306525.1990.9633941#.VHL6-1ItBHg
Cooper J, Crawford RJM, Suter W, Williams AJ 1990. Distribution, population-size and conservation of the Swift Tern Sterna bergii in southern Africa. Ostrich: Journal of African Ornithology 61 (1-2) 56 – 65
Website link:http://www.tandfonline.com/doi/abs/10.1080/00306525.1990.9633939#.VHsW62ctBHg
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
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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
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, 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
Displaying results 1 - 18 of 18

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