Following the update to American Ornithological Society (AOU) and American Birding Association (ABA) checklists in BUBO Listing, we have also updated all US state authority checklists. These now follow the latest AOS taxonomy, and incorporate new species additions for all states where known. Many states do not themselves update their published lists regularly so there are undoubtedly a few errors in our state lists. If you find any, please let us know in the forum.
