Where does Birdpost get its checklist data?
Birdpost features the best available checklists from various sources, including the publicly available Wikipedia, Avibase/Birdlife International, and USGS checklists. The regional checklists you see on the site are really “starting points” for vibrant checklists that can amended over time based on actual bird sightings. Remember, if 3 different users see a particular bird that does not reside on the list, that bird will automatically be added to the regional checklist.