Several days ago one of my hens started laying funky shaped eggs -- flat on one side, rippled on the surface, etc. She just started laying a few weeks ago so I figured it was part of the process. Yesterday I noticed a little discharge coming out of her eye, like a tear. I looked both symptoms up and several sites suggest infectious bronchitis as a probable cause. I have not heard any sneezing or coughing from the chickens. My question: the illness is viral and therefore not treated with antibiotics, but some sites say to administer antibiotics anyway to deal with any secondary infections. Others suggest vaccinating the chickens once any sign of illness is cleared up. I have a bottle of Tylan Soluble, and today a bottle of infectious bronchitis vaccine is set to arrive. Any thoughts on next steps? Would it hurt to do five days of preventative antibiotics? If it is IB, let it run it's course and then administer the vaccine? FYI, her egg yesterday was perfect. Thanks all.