SummaryThe contents of crops from 138Cacatua pastinatorcollected throughout Western Australia were examined. Abundances of the various food items reflected the land-use where the birds were collected. In the lower southwest,C. p. pastinatorate mainlyRomulea roseabulbs with moderate amounts ofAvena sativaandPoa annuaseeds whereas, in the wheatbelt the most frequent food for both C.p. pastinatorandC. p. gymnopsiswas wheatTriticum aestivumwithEmex australis, Hordeum vulgareandA. sativaas important items. The diets ofC. p. gymnopsisin the Murchison and Pilbara regions, andC. p. sanguineain the Kimberley region, were more diverse with native species predominating except for those specimens collected around towns and farms where mainly wheat, oatsA. sativaor sorghumSorghumsp. had been eaten. This and other studies, indicate that corellas have broad food preferences that enable them to exploit a wide variety of habitats including those altered by humans.