Just make sure it isn't coated with fertilizer, pesticides, fungicides or the like.I could put wheat in them my pap gave us about a fifty pound bag of wheat that he was using in his garden so I have some that I just use for there treats and don't know what to do with it
Was the wheat sold as feed for livestock or for planting as a cash crop?
........if it's for planting crops, it may have coatings on it the at could be toxic to your birds.