That's assuming that vets A, will see chickens and do more than just glance at them, and B, that people will be willing to pay hundreds of dollars possible per bird to be seen. Why would I want to pay $200 bucks on average per bird for possibly hundreds of birds?
Yeah, no. I don't want a bunch of random flocks coming into contact with birds I'm expecting. I would want to get them from their breeder if you refuse to have birds in the country mailed