my rooster is about 2 years old. On May 13 we had to cull a hen. In May 16 he made a strange half crow as if he had a sore throat. Since then he has not crowed or made ANY sound. He has not mated with the hens (13), mr does he alert them to food. He doesn’t get on the roost anymore just sleeps on the ground. His feathers look terrible and his tail droops. He’s very pale. He has been checked over for lice & mites, treated for Coccidiosis and wormed. He had none of that. His feet are fine. What in the heck do I do? Thanks.