While you may know your birds, do you know your holes? This handy Birdwatcher’s Field Guide to Holes in Trees can be very helpful when inspecting trees for the presence of invasive insects. If you are out this holiday weekend birding or doing other fun outdoor activities, be on the lookout for these different holes in the trees around you and report any that look suspicious as Emerald Ash Borer Awareness Week is nearing a close.
