Suddenly over the last 2 days my Silkie rooster has been wheezing, sneezing and making other strange noises. Today he was opening his beak and making this loud screeching noise. He doesn't seem terribly lethargic and he's eating drinking and pooping fine. I have 5 silkies total and the other 4 seem perfectly fine. They're kept in our screen porch in a very large wooden box without the roof (we cover them at night) which generally stays about 10-15 degrees warmer than outside. Temps are about 30-50 degrees outside in winter here. I know the pine shavings are making things a little dusty in the room so is that what's happening? Should I move them to their outside coop? I'm worried I'm doing something wrong. But their hen house is small and they can't figure out how to use the ladder to go outside so we've just been keeping them in their other house inside. I attached a picture of their inside "coop" because it's hard to explain. What should I do for the rooster? I moved him to a warmer area and have been keeping a close eye on him.