There's actually a way to find out, here at this
link. There you can check the box that says 'search by species', and uncheck the other two that are checked by default, now you can type in whatever you want! Unfortunately, when searching by species at least, the member list is set to only sort the users found by their registration date, so at the top of the list probably shows people who joined back in late 2006, when the forum was created.
What I did was hit crtl+F and typed '2016' into the find box, then I looked under the 'last active' field that's in the member list to more easily see the people who were most recently active this year. The more recently active people are probably more likely to respond if you send them a message or whatever.
I hope that helps, and I hope you make lots of Leporid friends!