Abstract: The main objective of this research was to determine if broiler chickens accurately regulated caloric intake when fed diets with different cereal grains. Control corn, drought corn, hulless barley, sorghum and wheat were analyzed for protein, ether extract and fiber. Diets were formulated to provide equal amounts of protein, calcium, NPP and ether extract. Other grains were substituted for control corn at 17, 34 or 51% of the diet. These diets were fed to broiler chicks from 1-19 days of age. During the last 2 days of the experiment, a balance trial was used to determine the AME of the feed. Chicks fed the control corn diet had the best performance and highest daily energy intake. Chicks fed the sorghum diets had the worst performance and lowest daily energy intake. Chicks fed the wheat diets had the second lowest performance and daily energy intake. Density of the individual grains and of the complete diets was only slightly different. Particle size of the diets was larger for the barley diets than the others, even though all grains were ground through the same hammer mill screen. A secondary objective was to determine if results from a preference test with mature White Leghorn roosters would parallel results from the chick experiment. Each rooster was offered a choice of a diet with control corn or one of the other diets fed to chicks. This was done for 3 days with the positions of the diets changed from left to right on alternate days. The roosters did not show a preference for any of the diets offered.