Shell eggs are the eggs laid by birds, primarily hens, and are commonly consumed by humans. They have a hard outer shell that protects the contents inside, which include the egg white and yolk. Shell eggs are a rich source of protein, vitamins, and minerals, making them a popular food choice worldwide. These eggs come in various sizes and colors, depending on the breed of the bird. The most common types of shell eggs are chicken eggs, but other birds like ducks and quails also lay eggs that can be eaten. Proper storage and cooking are essential to ensure their safety and quality.