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Article
J. H. van Niekerk, AuteurAssemblages of waterfowl (Anatidae) at two cattle feedlots 120 km apart in Gauteng province, South Africa are described. Yellow-billed, Fulvous and White-faced Ducks, Cape Shoveller, and Cape and Red-billed Teals benefited directly from the catt[...]
Article
J. H. van Niekerk, Auteur ; M. Barendse, Auteur ; F. Mare, AuteurThe social behaviour of marked Red-necked Spurfowls Pternistis afer was studied at Boknes and Cannon Rock coastal resorts near Alexandria in the Eastern Cape province between January 2001 and June 2008. Red-necked Spurfowls form breeding pairs. [...]
Article
J. H. van Niekerk, Auteur
Article
J. H. van Niekerk, Auteur ; C. van Ginkel, AuteurFeeding behaviour of pigeons and doves on sown grain crops was studied on the South African Highveld during 1998-2002. Plots of grains (sunflower, sorghum and maize) were planted on the farm Nooitgedacht near Heidelberg (South Africa) to study t[...]
Article
J. H. van Niekerk, AuteurDans Ostrich (83(1) 2012)This study describes the use of habitat by Orange River Francolin Scleroptila levaillantoides on farmland where grazing, grass burning, grass cutting for fodder and daily human interference (e. g. vehicular movement) occur. Fieldwork was mainly [...]
Article
J. H. van Niekerk, AuteurThe long-term effect of vegetation changes on the distribution of terrestrial gamebirds is poorly understood. This paper discusses the driving forces of range contraction and population decline of Swainson's Spurfowl Pternistis swainsonii in the[...]
Article
J. H. van Niekerk, Auteur
Article
J. H. van Niekerk, AuteurA survey across the sunflower production region of South Africa during November 2003 to July 2005 estimated the loss of sunflower seeds to columbids (doves and pigeons, Aves: Columbidae). Farmers estimated that 12.7% of the national yield was lo[...]
Article
J. H. van Niekerk, AuteurDans Ostrich (83(1) 2012)
Article
J. H. van Niekerk, Auteur
Article
J. H. van Niekerk, Auteur
Article
J. H. van Niekerk, AuteurDans Ostrich (81(2) 2010)The Crested Francolin Dendroperdix sephaena is a common gamebird in sub-Saharan Africa but its vocal behaviour is poorly recorded. A fixed area (24 km2) in the Borakalalo National Park (North West province, South Africa) was traversed during Dec[...]
