hello all! I have a flock of 5 hens that are around 6 mon old. They all seem happy, bright eyed, and energetic BUT I notice them sneezing from time to time. Even out in the yard when it’s not dusty. I clean their coop daily to every other day. Most days they have supervised free range time. They eat purina layer feed and have fresh water at all times. Is this sneezing something I should be concerned about? I’ve noticed for a couple months now. Every once in awhile one will sneeze and shake her head and I feel a clear droplet hit me. No runny eyes or swelling to face. They are my pets so please no one tell me that they all need to be put down. I just want to make sure I’m doing all I can to take the best care of them. Any thoughts or recommendations?