Hay bales are large bundles of dried grass or legumes, typically used as animal feed or for bedding. They are created by cutting, drying, and compressing the plants into compact shapes, which can be easily transported and stored. Common types of hay include alfalfa, timothy, and orchard grass. Hay bales come in various shapes and sizes, with round and square being the most common. Farmers often use machinery, such as bale wrappers and balers, to produce these bales efficiently. Proper storage is essential to prevent spoilage and maintain quality, often involving covering the bales or placing them in a dry area.