Just noticed this last night. I have Ekun in my party. His Lore - Nature is (Rank 7 + 1 Wisdom + 3 class skill) for 11 points. I killed 3 owlbears. (Killed not splattered.) When I went to check them for treasure, I clicked the 'skin' button. The read out said "Lore Nature check succeeded." "Lore Nature check succeeded." "Lore Nature check succeeded." but there was only one owlbear skin (with no other meats, loins etc.) When I checked the rolls that went with the checks, They were 25, 27, 25. The DC needed to pass was 25. But only one skin? I played around with the save games and it appears that you have to exceed the DC by at least 1. Why not just make the DC 1 more and not overwork the complexity of it? Do all DCs work like this or is this just a fluke for this particular action? Getting more discouraged with each passing hour.

Well, yes, the point is you have to 'beat' the check, and matching it is not beating it

this is not now it works. to beat DC you gotta match or exceed it. it is consistent across the board. what nature checks do is clearly a bug.