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Article
G. Kopij, Auteur ; O. B. Kok, Auteur ; R. J. Nuttall, AuteurThe breeding cycle of the Southern Bald Ibis, Geronticus calvus, was studied at a colony In the eastern Free State. Birds were paired before breeding commenced and nest building began regularly two weeks before the first eggs were laid. Nesting [...]
Article
G. Kopij, AuteurThe breeding ecology of the African Spoonbill is surprisingly little known. In the Free State, the number of nesting African Spoonbills appears to have declined; 120 nests in 11 colonies were located in 1972-1973, compared to 32 nests in four co[...]
Article
Article
G. Kopij, Auteur ; D. H. de Swardt, Auteur ; R. J. Nuttall, Auteur
Article
G. Kopij, AuteurStomach contents (n = 270) of 21 insectivorous bird species in six families (Paridae, Remizidae, Sylviidae, Muscicapidae, Laniidae, Malaconotidae) collected over a period of 10 years in semi-arid regions of South Africa were examined and identif[...]
Article
G. Kopij, AuteurThe feeding ecology of the Southern Bald Ibis, Geronticus calvus, was studied in the Free State Province, South Africa, during two breeding seasons in 1994 and 1996. Fields of harvested maize, burnt grass and overgrazed pastures are the main fee[...]
