I posted on his thread already, but here is what I suggest.
Contact your state Department of Agriculture (Arkansas first). Just call and ask the state poultry inspector how you can go about getting the proper paperwork for you to send the one bird. Maybe the whole flock will need to be tested, maybe they know of a vet who can give you a certificate of inspection. But instead of guessing what needs to be done just give them a call. You may also have to call Michigan's Dept of Agriculture to see if there are any restrictions in place.
Contact your state Department of Agriculture (Arkansas first). Just call and ask the state poultry inspector how you can go about getting the proper paperwork for you to send the one bird. Maybe the whole flock will need to be tested, maybe they know of a vet who can give you a certificate of inspection. But instead of guessing what needs to be done just give them a call. You may also have to call Michigan's Dept of Agriculture to see if there are any restrictions in place.