I look after my landlord's chickens and just noticed one hen is sneezing, beak wide open, comb is very light pink and a bit scabby, looks generally down. She is usually the boss hen so pretty much runs the show but now stood back from the rest. She does not look well at all, not even scratching among weeds I threw in.
I am guessing respiratory infection rather than old age. She is not that old. I let the landlord know but not sure on best course of treament or if it will spread to the others.
Any suggestions very welcome. Am hoping she makes it through the night so we can get some antibiotics into her tomorrow.