That could be it. I realized that i had turned my open plain into a forest. The soil turned into forest floor and up to that point ive never had a single wolf enter my camp or be anywhere near it. now I had several run in with wolves and had to heared a lot of wolf whining(?) (forgot the english word) which also never heard near my base in over my year and a half world.
so I think that the boat load of trees that I planted may have altered the spawn points.