I've only had them for 4 days and last night I noticed the white one was having difficulty breathing. We just switched our heat lamp light bulbs out for better ones (red shatterproof) instead of the ones that put out yellow light and thought maybe they were becoming overheated so we took him out to see if he'd calm down but nothing improved. While holding the white Silkie I noticed the black one sneezing and shortly after that one too was doing the same thing. We put probiotics and electrolytes in thier water and this afternoon went to tsc to get antibiotics. It's been almost 2 hours and they are still the same. I don't expect to see a big improvement right away but the white one has more spunk (fought me when I gave him water/antibiotics in the syringe) then last night. The antibiotic I got it oxytetracycline hcl but is that going to work? Right now they're lethargic and aren't eating/drinking so I've been giving them water with a syringe. There were with two Cochins but I separated them last night after the others started acting sick. They are acting fine, eating, drinking and peeping like usual. I'm not sure if there's anything else I should be doing or if there's anything else that I need to buy that would help them?