Hi Alan - have not seen any reply to your question. The answer is, yes and no. The swan is excessively tame, and a bit out of season for the species to be moving around, which raises some suspicion. However, a swan of the same species apparently showed up in Rhode Island about a month earlier, and then disappeared just before this one showed up in MA, so it may not have moved far. And most commenters discussing this swan on FaceBook are considering it to be from the Great Lakes population. That population was built using eggs taken from nests in Alaska, hatched and raised in zoos, then released. The birds from the Great Lakes are distinctly more tame and have a less predictable migration than the completely wild birds further west, but birds from that population are considered “countable” under ABA rules because the population now seems to be self-sustaining and growing.