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Summary A model of stress induced gizzard erosions is described. Three day old chickens were deprived of food for 24 h, and after that they were immersed in tap water (17°C) for five seconds. Group A was sacrificed immediately before being subjected to stress, group B one hour, group C two hours and group D three hours after water immersion stress. Each group consisted of 10 animals. Gizzard lesions in group A were very mild and the main feature was discoloration of the gizzard lining. In groups B, C, and D the lesions were more severe and they were characterised by gizzard erosions, ulcerations and hemorrhages especially pronounced in group D. This model produced lesions in all stressed animals.