I am just wondering - our cockerel that had weak legs (still has) and is unable to stand, has two tumors - one on the outside of his left leg (near the joint, in the feathered part) and one on the left side of his chest. Over the past few days they have become very hard, like a bone. Our vet to whom we took him did suspect Marek's, but I was not ready to have him put down. I am just wondering if it's possible to find out it's Marek's without putting the bird down, by taking one of these tumors which seem to be completely unattached to anything (just under the skin). I'm just clutching at straws, I'd feel horrible putting him down and finding out if was NOT Marek's but something that we could have treated.