Crawford, R. J. M.

The influence of food availability on breeding success of African penguins Spheniscus demersus at Robben Island, South Africa

Crawford, R. J. M., Barham, P. J., Underhill, L. G., Shannon, L. J., Coetzee, J. C., Dyer, B. M., Leshoro, T. M., & Upfold, L. (2006) · Biological Conservation

Avian ecology and behaviorMarine animal studies overview

Cited by 108

Distribution, population size and conservation of the jackass penguin Spheniscus demersus

Shelton, P. A., Crawford, R. J. M., Cooper, J., & Brooke, R. K. (1984) · South African Journal of Marine Science

Avian ecology and behaviorMarine animal studies overview

Cited by 84

Mortality and survival of African Penguins Spheniscus demersus involved in the Apollo Sea oil spill: an evaluation of rehabilitation efforts

UNDERHILL, L. G., BARTLETT, P. A., BAUMANN, L., CRAWFORD, R. J. M., DYER, B. M., GILDENHUYS, A., NEL, D. C., OATLEY, T. B., THORNTON, M., UPFOLD, L., et al. (1999) · Ibis

Marine animal studies overviewAvian ecology and behavior

Cited by 69

Trends of African penguin Spheniscus demersus populations in the 20th century

Crawford, R. J. M., Williams, A. J., Hofmeyr, J. H., Klages, N. T. W., Randall, R. M., Cooper, J., Dyer, B. M., & Chesselet, Y. (1995) · South African Journal of Marine Science

Avian ecology and behaviorMarine animal studies overview

Cited by 63

Differences in breeding success between African Penguins (Spheniscus demersus) that were and were not oiled in the MV Treasure oil-spill in 2000

Barham, P. J., Underhill, L. G., Crawford, R. J. M., & Leshoro, T. M. (2007) · Emu - Austral Ornithology

Avian ecology and behaviorOil Spill Detection and Mitigation

Cited by 45

Winners and losers – responses to recent environmental change by South African seabirds that compete with purse-seine fisheries for food

Crawford, R. J., Makhado, A. B., Waller, L. J., & Whittington, P. A. (2014) · Ostrich

Avian ecology and behaviorMarine animal studies overview

Cited by 39

The efficacy of hand-rearing penguin chicks: evidence from African Penguins (Spheniscus demersus) orphaned in the Treasure oil spill in 2000

Barham, P. J., Underhill, L. G., Crawford, R. J. M., Altwegg, R., Mario Leshoro, T., Bolton, D. A., Dyer, B. M., & Upfold, L. (2008) · Bird Conservation International

Avian ecology and behaviorMarine animal studies overview

Cited by 32

Age at first breeding of the African penguin

Whittington, P., Klages, N., Crawford, R., Wolfaardt, A., & Kemper, J. (2005) · Ostrich

Avian ecology and behaviorMarine animal studies overview

Cited by 28

The African Penguin Spheniscus demersus should be considered Critically Endangered

Sherley, R. B., Makhado, A. B., Crawford, R. J., Hagen, C., Kemper, J., Ludynia, K., Masotla, M. J., McInnes, A., Pichegru, L., Tom, D., et al. (2024) · Ostrich

Avian ecology and behaviorMarine animal studies overview

Cited by 23