Jim, They were all pines. I looked around quite a bit to try and find another species so marked, however pines are the only ones I could come up with. It is also apparent that they have been marking the sames trees for many years. They were heavilly sapped over, some had an inch worth of sap that had bleed out and had dried running to the ground.
FishandHunt, I didn't notice any trees marked higher than what a good sized bear could reach from the ground, however, I didn't think to look. You've got my curiousity going and I might have to check it out again when hunting season rolls around. All the bite marks were on the uphill side of the trees, and it was apparent that they wanted to make them appear as tall as possible. I did put a trail camera on some of them for a while and all I got was pictures of coons, coyotes, and deer.
My posts are worthless without pictures