I have an 8 month old Polish Rooster that has always sneezed (we've had him from hatching)and it gradually got more frequent. Today he's been sneezing all day and also making a hiccuping sound. His beak and eyes are clear, his droppings look normal. We have had very cold weather and then changing to much warmer. Last week we had over a foot of snow fall and today it's just about all gone. Could the crazy weather changes have anything to do with this? Everything is pretty damp but not terribly cold out today. Their coop is well ventilated and their run is protected from rain/snow, etc. Should I give him vitamins? How? In the water or directly and how much? Our hen isn't showing any signs of illness and I've never seen her sneezing. They were both hatched together. Should I separate them? They're the only 2 we have.