sick hen need help.

[Ghillieman]

I have a hen she is almost 2 years old. For the past couple of days she has been(what i call) sneezing. She will do it like 20 times in a row then wait a and go at it again. Yesterday one of her pullets was sneezing erradicaly aslo and looked real weak. It would lay there then move a few feet and lay back down. When the pullets was sneezing like it was, a little blood came out of its nose. What is this I culled the pullet I hope
I dont have too cull the hen also. Thanks for your help