These bats can distinguish between the two, and not just with trees, but with any echo that comes in a smooth or rough shape.
⇑ Translate the sentence above by Google ⇑
Related: echo
Prev: So, the echoes from a tree are going to a mass of chaotic acoustic reflections, not like the echo from a moth.
Next: These findings echo earlier research that suggests our perception of food can sometimes trick our body's response to the food itself.