Abstract
Giant kingfishers, M. maxima, were studied during 1972-1975 on the Eerste and Blaauwklip Rivers near Stellenbosch (33.degree.53''S; 18.degree.50''E), South Africa. Nest record cards of the Southern African Ornithological Society were examined for dimensions of the nest, nest living, clutch-size and brood-size. The feeding rate of nestlings was determined from observations at the nest. Two adults, comprising a pair of breeding birds, and a fledgling were equipped with breast-mounted miniature radio transmitter packages to monitor the birds'' activity and home range. Cape River crabs Potamon perlatus apparently were the main prey of the kingfishers. A correlation was found between the activity patterns of kingfishers and of crabs, which peaked in the mornings and evenings.