I'm so upset. I didn't hear my rooster this morning so I went looking and found him laying dead in the coop. His comb and beard were purple and he had no signs of foul play from another animal. I've had him a few months now, best boy ever but he did do this wierd thing I noticed when I brought him home till the time he died, of stretching out his neck and opening his mouth like he was gonna crow but no sound came out. He always seemed fine though, eating and drinking and running around.. his comb did have a purple color that came and went on the top... this is my first flock and I feel so bad that he may have been sick and I didn't find a vet.. I have 6 adolecent chickens as well who are a few weeks off from starting to lay.. should I be concerned for them? What could have killed my beautiful rooster?