The walnuts in shell are of superb quality and delicious! These nuts contain plenty of linoleic acid, proteins, and various vitamins and minerals. Similar to pecans, they come from America and are a favorite for birds and their owners. They make a great and healthy alternative to peanuts or can be a challenging treat for smaller birds. You can even cut them in half for easier consumption. When stored in a cool, dry place, they will keep for at least a year in consumer quality.