Well 4 weeks into owning my new chickens all 4 of them are coughing, sneezing and gurgling. I owned some Warren Babcocks many years ago and had no trouble with them whatsoever. This time round I have done nothing but spend money on them, research and learn on BYC and care for them nearly as much as my own family. They are wormed, treated with DE, live in a big coop (cleaned on a daily basis) no mites, no lice, fed well and given fresh water everyday with ACV and Vitamin supplements and free range for about 10 hours a day. It seems like they are all sick. All of the articles I have read on BYC come back to respiratory diseases, gape worm and sour / impacted crops. I understand most of them but i'm utterly p***ed off that my chickens are either going to cost the world to keep alive or die from an illness and then I will have to clean everything and start again. It started with one of my hens sneezing and coughing before struggling to breath. That hen then started to hardly move and just stand in one spot in the garden for an hour or so. She eat and drank water before heading into the coop and now all 4 of my hens are sneezing in the coop. There is no visible sign of swelling to the head of the hens No visible sign of excess liquid or discharge in the eyes The poop has been pretty consistent with some minor instances of watery or runny poo There is no sign of discharge from the beak No sign of discolouration in any form or part of the birds The birds are sneezing. The hen that was worse today is now making coughing sounds and raspy breathing. The coop is brand new, no other birds have used it, fresh bedding, cleaned daily, DE used in coop Today I used DE on the birds as a preventative for pests. The DE treatment is the only thing I have done differently today. Any thoughts?