I have a problem with a deadly disease going around. I don't know what it is or how to treat it. All that I know is the wild dove population has it and some infected birds found a hole to get into my coop by. I lost my EE to the same thing that I witnessed a few wild doves die to. The symptoms are drooping wings, reduced desire to eat, then lethargy, and lastly, sudden death the next day. I saw her panting and heaving heavily yesterday but I assumed it was the heat because my Silkie was panting pretty hard too. I mis-diagnosed the problem and now the EE is dead. I found her laying stiff with her legs behind her, eyes and mouth closed, dead. Just like the doves. Now I'm left wondering what is this highly contagious disease? How do I prevent it, besides securing the coop of holes that the doves are getting in through?