There is one other safeguard. I should explain that I'm not a birder, so I use the app, but don't have any involvement with the program itself. If somebody puts in something that is crazy, like they saw a dodo, or something like that, that will get flagged, and it will come to the attention of a regional reviewer, and they can ask them about it. That's an extreme example, obviously, but if it's something really out of place or a huge number of something that never occurs in those sorts of numbers, it does get flagged and the regional reviewer can ask them to correct it. If they don't correct it, the reviewer can simply remove that from the main dataset.
On February 9th, 2023. See this statement in context.