I recently got some older pullets closer to laying. I've had them for almost 2 weeks and I'm beginning to hear sneezing. I checked their noses and they seem clear. I occasionally see some drops of water or something on their beaks but that could be from drinking or from wet grass since it's been so wet around here. They do seem to be sneezing more than the occasional 'normal' sneeze I hear from my chicks. There is nothing that could be causing dust either. They are eating and drinking and otherwise acting just fine. Do you think I should have reason to be concerned? What else should I keep an eye out for? Do I need to cull before it gets worse? I'm mostly concerned about getting my other chicks sick even though I've kept them in a separate part of the yard and they haven't had any contact.