So I'm now really worried! We had a silkie die about 2 months ago. She was a lot smaller than the rest, was eating and drinking but just up and died one day. Now tonight with the loss of my other girl. (she was making an almost hacking noise, couldn't stand) I am totally freaking out. I am Very new to having chickens and so unsure of what to do. Do you treat your flock with something to prevent diseases? Here are some symptoms that my chickens are showing. Sneezing, runny noise (Almost all of them) A couple of them are almost throwing up. This yellow ish liquid will come out of their mouths. Also we noticed they do have bugs. We have treated with Mana pro poultry protector. All of their ages and breeds range. We have some that are around 6 months old, young as 5. Out of 16 we only have 2 that are laying. I feel like I am totally doing everything wrong. We clean their coops once a week. I use water to rinse it out, Vinegar on the areas with heavy poop, Rake out all of the wheat straw, I dust the area with DE, add something called nesting box blend ( herbs that are suppose to detur bugs). We are feeding cracked corn, cracked wheat, and layer feed. What am I doing wrong?? What should I be doing??