Capillariasis caused by Capillaria annulata was associated with dilated crops, emaciation and mortality of 23 juvenile wild turkeys (Meleagris gallopavo silvestris) in a captive flock. Gross lesions in the crops ranged from slightly-thickened lining folds to a thick necrotic diphtheritic membrane covering the entire inside surface. The parasites were in the squamous epithelium. Hygromycin controlled the outbreak.