Please help! I have a 6 week old BBS Orpington chick that, 2 days ago, was found to be limping and stumbling on it's left leg. I have checked for obvious signs of a break or dislocation and didn't find anything. I did put it in a large bird cage within the pen with the other chicks so it was confined but still could see the others. That way it wouldn't get trampled by anyone. This morning I went out to the barn and the chick is now stretching it's neck and taking deep breaths. It sounds like it may be wheezing or gasping. It is still limping around. I have since moved the cage out of the pen with the others since this appears to be more than a injured leg. Does anyone have any ideas? It's been living with 21 other chicks, none of which show any signs of any type of distress but I don't want to lose them all to something unknown and contagious. I've googled Marek's and other things but nothing seems to match these symptoms of limping and now respiratory distress. If anyone has any experience with this or insight as to what this may be please, please share it! Thank you!