Because the chicken expert at the feed store today said if you feed them a few handfuls of course cracked corn before bedtime, it warms their stomachs, he said it was kind of similar to how whiskey (supposedly) warms you up. Something about their gizzards working on it all night or something, made them feel warm. I tried it tonight. I don't know if they'll be warmer, but they sure did love it. Anyway, I just wondered if anyone else had heard that before.