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Summary
Vernon, C. J. 1986. The Ground Hornbill at the southern extremity of its range. Ostrich 57:16–24.
All records of the Ground Hornbill Bocorvus leadbeateri south of 31°s are reviewed. The distribution of the species coincides with the grassland and forest veld types. The range has declined and the birds have withdrawn from the peripheral grassland areas. This decline is assumed to be a consequence of the increase in human population. The mean size of the Ground Hornbill groups is 3,5 birds.
