All North American checklists on BUBO Listing are updated to the latest official published versions and taxonomies. In particular this includes the authorities listed below (shown with the major species changes):

American Ornithological Society (AOS) - AOS 60th supplement (June 2019)

pair of white-winged scoters in flight

  • White-winged Scoter split into Velvet Scoter Melanitta fusca, White-winged Scoter M. deglandi and Stejneger’s Scoter M. stejnegeri
  • Grey-faced Petrel Pterodroma gouldi split from Great-winged Petrel P. macroptera
  • Monteiro’s Storm-Petrel Hydrobates monteiroi split from Band-rumped Storm-Petrel H. castro
  • Orange-bellied Trogon Trogon aurantiiventris lumped into Collared Trogon T. collaris

American Birding Association (ABA) - v8.0.5 (December 2018), incorporating taxonomic changes from AOS 59th supplement

aba listWe have also pre-empted the above taxonomic changes from AOS 60th supplement which ABA is likely to adopt formally in December 2019.

Importantly we now extend our ABA area to include Hawaii, as per the v8.0.1 (November 2017) update, which results in over 100 new species being available. We keep the 'old' ABA Continental Traditional area for historical lists (pre 2016) but you should use the new ABA Area location, including Hawaii, in future.