After a recent thunder storm, our neighbor told us that he thought one of our trees had been struck by lightening because he saw an array of sparks after a close hit. Upon close inspection, we found this. One side of the tree is devoid of all bark and the other side of the tree still has all the bark, tight and intact. The photos show the tree trunk and all the bark that was 'blown' off of the burned side.
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Correction: What we thought was a lightening strike turned out to be bark destruction by squirrels. It seems that in years of drought, there is a fungus that grows between the bark of a tree and the tree trunk. Squirrels love it! When they can't find food like nuts, berries, etc., they begin to tear off the tree bark and eat the backside of the bark. All in all, they've killed 4 good sized oak trees in our back yard.
I don't think that was caused by squirrels, Mom. That looks like canker, a fungal disease. Squirrels would not be that even. Plus, the fact that multiple trees got it makes sense.
It's a disease.
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