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Winterbottom, J.M. 1960. Systematic notes on birds of the Cape Province. A further note on Anthus novaeseelandiae XIII. Ostrich 31: 178-179.
Winterbottom, J.M. and Van der Merwe, N.J. 1960. Duck counts at the S.A. Lombard Nature Reserve, Transvaal. Ostrich 31: 131-134.