A couple of my hens have been sneezing these past few weeks. There's no discharge, they're eating like horses and they're generally having a great time. One of them, Modez, when you pick her up sounds a bit wheezy in the chest, but I wonder if that's related to when she lost her voice a year ago in a vicious dog attack - she's only just getting it back as she did a lot of screaming that day. Almost as much as me. On a different note she now sounds friggin hilarious. She is like a squeaky door... Do they get hayfever or should I be more concerned?