I'm frantic, don't know what to do. He stretches his neck and shudders it. Is standing upright like a runner duck and looks like he's having spasms in neck and back. He makes a noise I've never heard them make, assume it's a cry of pain. He's passed the white stuff from his vent but no good poo for at least a couple days. I caught him yesterday thinking he may have gap worms and dosed him down the throat with Ivermectin. Didn't see anything in his throat. PLEASE HELP!!! LOVE MY HOBBY, LOVE MY PEAFOWL!