But let me get this straight, you have no problem completely dismissing the connection between bear populations and bigfoot sightings, but get completely giddy over a possible connection to UFO sightings?
Comparing the distribution of Sasquatch sightings to a map of state population of black bears is not adequate comparison as there is no comparison to the black bear population distribution; i.e. while Texas is shown to have between 0-999 black bears, the map you posted doesn't show that they are apparently limited to the very NE portion of the state and are not present anywhere else. Michigan's black bears appear to be limited to the UP and upper LP, though I am aware of of at least one case where a black bear was seen not 60 miles from the Indiana border, it was identified as such and unfortunately shot down by local police. Yet there are a number of Sasquatch sightings in the LP. We should compare distribution to distribution.
I took the black bear range distribution map from here and overlayed it on Josh's map to compare the sightings distribution and black bear ranges.
While the sightings and bear population do overlap well in the NW parts, they do not overlap so well in the Central or Atlantic states. I do not doubt that a portion of the sightings may be misidentifications, but I do not think that accounts for all sightings.