I found this guy who sells kettle corn and he wanted to give me his leftover batches to feed my chickens - 14 and one rooster. He wasn't sure if they'd eat it, but they love it. He's given me 7 trash bags full of kettle corn this week. I give them a couple scoops every other day and they just gobble it up. Is it safe for them? Can I give them too much of it and make them sick? Thanks.