Step 1: go to the identification page
Step 2: click on a filter like Birds and/or Mammals
Step 3: click on the Unknown filter
OK so this is peculiar. It started happening a couple days ago, I’m on an older OS running the extended support release version of Firefox and I seem to only be able to click one filter at a time. But after playing around with it I realized I -can- select multiple categories but the moment I click Unknown, the others categories deselect. (It’s just that I seem to habitually click the unknown category second when filtering).
So I checked on my iPhone, which is happily running iOS 18, and then on an Android- same result. Anyway, made a feature length video about it
https://youtube.com/shorts/MO2E1N7_1c8
cheers
Rudyard