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Old 01-11-2012, 01:21 PM   #2
Join Date: Apr 2008
Posts: 87
Assuming you are correct that cougars have never lived in canadien shield, the hypothesis still doesnt work because in the past cougars have lived in the adks, among other locations without karst topography. Might they move in search of better dens sites? Once a population is overcrowded enough, dont they move out anyways to find dens, mates, etc? Be hard to determine why they move unless they all do it simultaneously for no other apparent reason. They survived here for a long time until we interviened, not because of den sites. Maybe your observation is an example of evolution and they have evolved to find certain habitats avoiding ones they had previously used hundreds of years ago? Who knows....
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