A hen must mate with a rooster before it can lay fertile eggs. When roosters court hens, they puff out their feathers, fan their tails, and stretch out a wing. If the hen allows it, they will embrace. Eggs are formed in the hen's abdomen, and she will lay one egg per day. Only in the spring will they brood and hatch the eggs. When a hen feels the urge to incubate her eggs, she will get very warm and want to sit on the eggs like she has a fever. To ensure even heat distribution and prevent the embryo from sticking to the shell, the hen will turn the eggs with her beak and feet while incubating. Since she supports herself