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Message: <blockquote data-quote="Mysticete" data-source="post: 3616060" data-attributes="member: 67784">American Three-toed Woodpecker has been in the last few editions (it was split quite a while ago, stateside IIRC. Barn owl has not been split by the AOS (and even then it would just be renaming...I don't think the old world form has been recorded in the States or Canada.It's probably will be mostly vagrant seabirds/Alaskan Strays/Stuff from Mexico and the Caribbean that have appeared since the last edition, alongside whatever taxonomic splits that occurred up to 2016. I have the book on order but it should arrive Thursday, so I can maybe give you a better sense then.</blockquote>