Dried beans are a tasty, nutritious snack for any bird; they just need to be soaked in water and cooked first. Some dried, uncooked beans contain enzyme inhibitors that can block the body's ability to handle certain kinds of nutrients and can also have hemagglutinin, a substance that can have toxic effects by causing red blood cells to clump together. Cooking destroys the enzyme inhibitors and breaks down the hemagglutinin, making them safe for our feathered friends.