Dear Tekepek,
Thanks for putting foward the logo entries. I like all of them for various reasons. the monkey ones are simple, recognisable, and capture the core ideas well. Between them, I prefer the monkey with the white eyes. I do worry a bit about how the monkey image would work as an icon on a black background but perhaps that would be easy to resolve by reversing the greens when using the logo that way. The monkey ones do worry me a bit in that the monkey is not a global species and may not trigger interest in birdwatchers or divers etc. The more abstract animal in entries #28 and #27 address that concern well.
In entry #27, I like the magnifying glasses and the animal outline is excellent though a bit hard to use as an icon on its own. Entry #28 resolves that nicely but it does so at the cost of perhaps only working on a black background. Again perhaps that is easy to resolve by making the animal outline black when used on a white background.