I found one of my meat birds feeding on an old bag of linseed meal (the people who lived here before us left it). My egg layers weren't at all interested in it. It had pecked through the packaging and was feasting on it. Is this okay, or will it harm the chickens? I hardly ever let them outside of their run, so this is the only time they've accessed it. If it doesn't harm them, can I mix it with the chicken feed as a supplement (the bag is huge and I'd rather not waste it). Or should I get rid of the bag in case it's harmful to them? Thanks for your help!