Scientists who study them have discovered that crows can count and that they have their own language. Crows can do all sorts of things that make them special. A person once saw a crow using a tool. The crow held a twig in its beak and poked it inside a branch to get out insects. That is a very smart thing to do.
People use tools, and monkeys use tools.
Sometimes otters use natural tools to break clams open on their chest. Crows are very special birds because they know how to use something like a twig as a tool. Crows have lots of ways of saying things with different sounds. A scientist named Dwight Chamberlain recorded twenty-three different calls that crows make. The sound that crows make is easy to recognize.