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this was previously noted in https://forum.inaturalist.org/t/user-with-many-species-is-excluded-from-stats-if-not-within-top-200-observers-in-traditional-project/42912/6 and https://forum.inaturalist.org/t/im-missing-from-the-global-leaderboard-observers-by-species/60401 . staff have not commented sp…

Yes, I’ve heard from people that it works like that so iNat system doesn’t need to process a lot of data.

Why is this not a bug? The user who has the maximum number of species in the project and who occupies the 1st place is not even displayed in the list ranked by the number of species. Obviously, this is interpreted as a bug.

[image] mikhail_golomysov: Why is this not a bug? I mean “bug” as defined for this forum category : By “bug” we mean that something is not working the way it is intended to. The way you currently see it working is intentional. I’m not saying it’s ideal or could not be improved, but it’s no…

Incorrect calculation for "Most species" on the project page

Bug Reports

tiwane March 10, 2025, 9:08pm 4

Correct, this is not a bug.

Project Leaderboard shows incorrect species counts for some observers

Sort by within a project is not sorting based on the totality of observations

Topic		Replies	Views
Sort by within a project is not sorting based on the totality of observations Bug Reports	3	105	January 14, 2026
User with many species is excluded from stats if not within top 200 observers in traditional project Bug Reports web , projects	5	796	June 28, 2023
Project Leaderboard shows incorrect species counts for some observers Bug Reports projects	1	184	July 7, 2026
Can't sort observers by number of observed species Bug Reports web	13	1932	March 8, 2020
Inconsistency with "Most Species" display vs. link in collection projects Bug Reports projects	4	346	August 12, 2023

Incorrect calculation for "Most species" on the project page

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