Sunseed grainola treat bar are handmade by coating different mixtures of seeds, grains, fruits, vegetables and nuts with a specially developed binder, hand packing them into forming trays and then slowly baking in low temperature ovens for over 8 hours. The result is a delicious, long lasting treat bar that birds and small animals will spend hours gnawing or pecking on to get every last morsel. This treats can last up to a week or longer depending on the size of pet. Perfect for canary/finch. Available in canary song flavor. Its weighs 2.5-ounce.