Designer eggs are those eggs produced by flocks of chickens which have been fed special diets in an attempt to modify the nutrition of the eggs they produce. Consumers should be well informed about the differences in these eggs and all other eggs when making purchasing decisions. Free range eggs are produced by flocks of chickens which are not confined in cages. The chickens may be raised on the floor of a poultry house or they may be allowed to roam around outside. Yolks of free range eggs may be darker because of the chicken's eating foods that contain more carotenoid pigments (green grass, yellow corn, etc.).