I started just irresponsibly and quickly fell in love with these awesome little creatures. I had 12 hens and 2 roos. I am down to 9 hens and two roos. Two hens were the victim of hawks and one died within 3 days of noticing something was wrong with her. Now - I notice another hen is sick with a runny nose and staying away from the rest of the flock. Today is the first day I noticed her being sick at all. She's puffed up - sitting on my bed. Her nostrils look dirty and runny - but not slimy. And oh my god she just sneezed and scared the crap out of me - it was almost a crow!!!! I have D-10 and Electrolites. I don't know how much of the D-10 to put in a gallon. What is happening with these birds getting sick and how can I prevent it from happening. I recently took in a rescued turkey - related issues? He does hang out with the chickens but doesn't sleep in the same coop.