white oak insect pest?
I have a large white oak in my front yard - it is a native tree - here before the houses in this neighborhood were built. There are holes in the bark which are either from insect borers or birds pecking for insects. I've asked one arborist and he says they were caused by someone climbing the tree with spikes - not true!! A few months ago someone pruned dead limbs, but these lesions have been becoming more extensive over the past 4 to 5 years. Any ideas what could be happening?
Based on ;your photos the holes in the trunk look old. We cannot say for sure what caused them. Mature trees may have an occasional borer. We suggest that you contact several certified arborists for an onsite diagnosis regarding the health of the tree. http://www.treesaregood.org/