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Abstract
Extract
A budgerigar brought to the Wallaceville Animal Research Station for examination showed a severe chronic lesion of the beak and ceres. The lesion was heavily encrusted and showed honey-comb-like pitting (Fig. 1). Four birds of a flock of fifty were similarly affected. Mites were found in scrapings taken from the base of the beak and were identified as Knemidokoptes pilae, CitationLavoipierre and Griffiths, 1951.