I occasionally notice my chickens sneezing and was just wondering if this is normal, like it is in us. It's usually when they're stuffing their faces, so I figured it was probably from the dust in the food, but the past couple days it has been a little more frequent (though still not what I would call frequent), so they've got me concerned. No discharge, swelling, acting sick, etc though. I just wondered if this was normal. Thanks!