I bought five birds this weekend. Come to find out they are all sick. Should of expected it considering the living conditions they WERE in. We noticed that one of them was coughing/sneezing yesterday. She is a scillian buttercup around a year old. When you hold her you can tell she is having a hard time breathing. Wheezing, rattling etc. her eyes are clear and bright. Activity is what I would consider a little below normal. She is still eating, scratching and drinking fine. She does have a yellow discharge from one nostril and clear from the other. Black copper maran rooster. He is also around ayear to 18 months. He rattles badly when he gets to "cooing" at night. He's eyes are clear and bright. He is active and curious. Eating,drinking and scratching fine. Comb and wattles look fine. Only other symptom is he has the same discharge coming out of his nostrils also. Our maran hens. All are same age of rooster. None are coughing or sneezing. All are active eating and scratching fine. All eyes are clear and bright. Varying degrees of nostril discharge. Only one has yellow discharge. One does have what I describe as mouth gunk in the corner of her beak but not bad. All vents are clean and normal. Wings are clean and there is no skin irritation. All porportions of birds feel normal and there is no muscle stiffness. They are free of mites(as far as we can see. Did thorough check) feet are clean and healthy. Any help would be appreciated. I have done a lot of reading and I am lead to believe that I need to start dosing all five birds with Tylan 50. Will be going today to pick it up. All the birds are quarantined from the rest of my flock. I have a gallon water that I put Apple cider vinegar with the mother in at a ratio of 1 tbs to the gallon. I also have a 1/4 gal water in there with an electrolyte solution mixed in that I found off of this site. I know these will not cure the birds but I am hoping it will help. I am also planning on installing a heat lamp in the coop tonight as we are starting to drop down into the 40s at night.