Here's why:
* Bats roost in many places: They use caves, mines, hollow trees, buildings, and even bridges.
* Tree shape isn't the main factor: They look for shelter, protection from the elements, and safe places to raise their young.
* Specific tree types: Certain bat species might prefer certain types of trees, like those with large hollows (like oaks) or trees with flaky bark that they can easily cling to.
So, a bat's choice of roosting spot is more about the features of the location than the shape of the tree.