symptoms include: swollen eyes and face eyes glued shut with white mucus. wheezy gasps rattling phlemmy sounds when breathing sneezing/coughing. I really don't want to kill them, can chickens survive symptoms like these that seriously suggest a respiratory disease? also, one of the hens is sitting on eggs that aren't biologically hers, i really don't want her to infect the chicks when they're born. Will i have to remove them from her at birth to prevent this? The clucky hen only has noisey breathing and sneezes but i don't know her behaviour (as she's not mobile) so i don't know how healthy she looks. The poor little other chook really isn't looking well at all, she's pretty much blind, and just stands in one spot drooping her head occasionally and gasping. i really don't want to have to put them down or have them infect my other chickens. what can i do to help them?