 talked many times about this sap sucker type of woodpeckers where they drill these neat holes on a tree uh kind of a neat row of of holes and uh then they those holes filled with sap and then the sap sucker woodpecker drinks those out and of course that can also damage a tree and that tree tangle foot available for garden centers is a sticky substance that you put on the tree it's tree friendly but the birds don't want to get that stuff on their feet