My chickens in the coop range in age from about 16 weeks to 5 weeks.
This weekend, I noticed one of my chickens (from the game hen flock) sleeping a lot, tucking it's head beneath its wing and sort of isolating itself from the others. It also seemed to gasp and extend its head while sleeping too. I happened to notice it's poo was very runny. I made a mental note to check on it often throughout the weekend. Its eye began to swell, and get red. When I went to pick it up, it practically collapsed in my hands. We decided to put it down because it just seemed to be fading.
This afternoon, I noticed more pullets from the same flock have watery eyes, only one has swelling so far. They also have a wet nasal discharge. A couple of these birds were resting on the perch and began to extend their necks and open their mouths like they were gasping for air. When I went to pick them up, they were full of energy, began eating and drinking with no problems. I noticed their poo was sort of a mustardy color--still a bit loose, even for a chicken.
The other young chicks in the same coop all seem fine. None have watery eyes, none have loose poos, none have runny noses.
I keep the pen, water, food and bedding clean. The bedding is hay for now.
I'm concerned that the gamehen pullets' mother was a carrier for some respiratory disease, and how to prevent the other chicks from catching this. I don't know the first thing about vaccinations or how to disinfect a brooding house/pen. Please advise what I should do. I have 22 birds in the large pen and would hate to lose them all, but I also have 10 day old biddies inside my house, separated from the others that I've planned to integrate once they are ready. I just want a health feathered family.
Please HELP!
This weekend, I noticed one of my chickens (from the game hen flock) sleeping a lot, tucking it's head beneath its wing and sort of isolating itself from the others. It also seemed to gasp and extend its head while sleeping too. I happened to notice it's poo was very runny. I made a mental note to check on it often throughout the weekend. Its eye began to swell, and get red. When I went to pick it up, it practically collapsed in my hands. We decided to put it down because it just seemed to be fading.
This afternoon, I noticed more pullets from the same flock have watery eyes, only one has swelling so far. They also have a wet nasal discharge. A couple of these birds were resting on the perch and began to extend their necks and open their mouths like they were gasping for air. When I went to pick them up, they were full of energy, began eating and drinking with no problems. I noticed their poo was sort of a mustardy color--still a bit loose, even for a chicken.
The other young chicks in the same coop all seem fine. None have watery eyes, none have loose poos, none have runny noses.
I keep the pen, water, food and bedding clean. The bedding is hay for now.
I'm concerned that the gamehen pullets' mother was a carrier for some respiratory disease, and how to prevent the other chicks from catching this. I don't know the first thing about vaccinations or how to disinfect a brooding house/pen. Please advise what I should do. I have 22 birds in the large pen and would hate to lose them all, but I also have 10 day old biddies inside my house, separated from the others that I've planned to integrate once they are ready. I just want a health feathered family.

Please HELP!