Most people recommend keeping new chickens or other poultry quarantined away from your flock for at least 30 days to make sure they are free of any symptoms of disease. Respiratory diseases such as MG, coryza, and others can show up within a few days to a couple of weeks. Coccidiosis can be common in chickens that are moved to new soil. It is treated with Corid in the water. Worming new chickens may also help. Look for signs of lice or mites on the skin around the vent and elsewhere. Nasal or eye drainage, swelling of the face, sneezing, coughing, and noisy breathing can be signs of respiratory disease. Those may be treated with Tylan or oxytetracycline. Respiratory diseases can make carriers of the whole flock for life, so it can really be a headache. Here is a good link to read about coccidiosis and the other common diseases:I bought two new chicken at the farmers market and they are acting weird but I thought they just needed a little time to adjust.
turns out my chicken that was already in there ended up acting weird too and I think I bought sick chicken!
they are sleeping all the time and barely moving, a little diarea my chicken stopped laying eggs and the new ones never did. they are just standing there no moving much, they are eating (not as much as before) but eating, watery eyes and the new one make weird sounds. I am very worried that I introduce some very sick chicken to my very healthy chicken. any advise and help will be appreciate.
http://www.thepoultrysite.com/publications/6/diseases-of-poultry/206/coccidiosis/
http://edis.ifas.ufl.edu/ps044