If you’ve ever looked up at a tangled ball of twigs high in a tree and wondered what it was, chances are you were staring at a squirrel’s nest, also called a drey. These clever little structures might ...

Grey squirrels, or Eastern grey squirrels, primarily live in the Eastern half of the U.S. and southern Canada. There is also a healthy population in the U.K., where they were imported in the 19th ...