I thought I'd already pointed out that I make more in a week at iStock than I have in a year on Alamy.
And for wildlife, just check out everyone else's port on any of the macro sites and realise that's what you're competing against. It's a vastly oversubscribed subject area. (I'm really only interested in wildlife, I just shoot other things to push me to try different things and to see what sells. Besides, I can't be out in the field all the time.   And even if I could, the weather and light here usually aren't up to much.   )
Honestly, whatever wildlife pics you've got, do searches for similars in all the macros and micros and see what you're up against. Some of the macros, are only interested in 'coffee table book'-style photos. You might get lucky with rarer species doing unusual things, but they still have to be in at least 'good' light, unobscured composition and technical excellence - buyers aren't interested in your story of how you had to crawl for five hours through an alligator infested swamp through the night to glimpse your subject through a bush at dawn. Of course, if you find the Loch Ness Monster, it won't matter if you photograph it with a Box Brownie.
You'll also find that most photos which are published of 'less usual animals doing less usual/interesting things are taken by the authors of the article they accompany. (That could be a niche worth exploring).

Did you get accepted yet there?
If you want to do microstock seriously, you should. You can't say you've driven a car until you drove a BMW.