Breeding distribution and population sizes of three species of penguin at Subantarctic Marion Island

Crawford, R.J.M., B.M. Dyer, M. Greyling, J. Hurford, D. Keith, M.A. Meyer, L. Upfold, A.C. Wolfaardt, J. Cooper, D.C. Nel, O. Huyser and N.T.W. Klages