My fall winter project is cleaning out the barn. I purchased this property in june. I was moving some stuff and came across 3 buckets sealed. One said flax seed one has beans in it and one is a grain small white looks kind of like a cross between rice and oats. Can I feed the grains to my chickens and how much should I give them. I am thinking of just tossing some on the ground or in the coop. they are 5 gallon buckets.