Hi I hope someone can help me with this one, I am new to keeping chickens and have re-homed 9 from my neighbour who had to move. they are free range, live in a large shed at night with boxes, food & water. One of the hens has developed an absess on the side of her face, on closer inspection it has burst and there is vile smelling thick yellow puss both in the side of her face and into her mouth... I have tried slucing it with boiled salt water and trying to remove as much of the yellow infection as possible with a cotton bud but its gone hard so not so easy to get. Any suggestions on what would be the best way to help her at home or is it definatey a vet job???? Also could this effect any of the other birds? We have called her 'stich that' as we have 2 Rottweillers and if they get to close she gives them a headbutt. So its sad to see her any help appreciated.