Which squirrel call is best? You have probably heard a squawk when you pass by a tree and assumed it was a bird. Chances are, that sound was made by a squirrel. Squirrels are very vocal. Using a ...

If a tree falls in a forest and no one is around to hear it, does it make a sound? Today, we know the answer is a resounding yes -- thanks to a bio-acoustic monitoring system that uses artificial ...