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Crowned Cormorant Crawford RJM, David JHM, Williams AJ, Dyer BM. 1989.
Competition for space: recolonising seals displace
Year No. of pairs endangered, endemic seabirds off Namibia. Biological
2003 a 31 Conservation 48: 59–72.
Crawford RJM, Williams AJ, Hofmeyr JH, Klages NTW, Randall
a Kemper et al. (2007) RM, Cooper J, Dyer BM, Chesselet Y. 1995. Trends of
African Penguin Spheniscus demersus populations in the
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The Oyster Cliffs caves used by seabirds for breeding, showing entry of seawater into the caves (photo BM Dyer)

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