Ornithosis lives within and destroys body cells like a virus.
Clinical signs vary from poor performance to an acute disease causing a marked conjunctivitis, decreased appetite, respiratory disease, diarrhoea and death. The acute form is particularly prevalent in young birds and older birds under stress
In the beginning the pigeons are not very ill but symptoms range from bad performance, sneezing, filthy noses, open beak, rattling, eye infections and festering nose flow. In some cases you can see a big head (feathers around the ears are standing up).
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