I hear a few of my chickies doing this tiny little thing that I think is a sneeze. A tiny little puff of air. The one that does it the most is my Polish. Maybe a 2-3 times per hour, but they're so darn noisy that I can only hear it or notice it if I'm holding her. No goopy eyes, no other weird runny nose or respiratory symptoms. Just happy, crazy, 2 week old chicks. When is sneezing not ok?