Hi, I just got two hens one has for sure some type of respiratory problem. She coughs,sneezes,wheezes and is very under weight. The other has severe leg mites. I have them separate from my flock. I just got respiratory support meds at rural king. I have been giving this to them and applying Vaseline on their legs. Will I ever be able to add them to my flock, it makes me so sad to see such pretty hens suffer like this. Will I ever be able to add them to my happy flock? I know it is incurable at least most is but is there certain points when contagious and times when not.