If you know how to listen, birds can tell you when there's a cat, a weasel, or even a person headed your way.<br />According to Mother Nature Network, birds' calls and body language reveal the presence of other wildlife.<br />For centuries, Native Americans have relied on so-called 'bird language.'<br />But really, anyone with sharp eyes and ears, and patience galore, can learn to translate songs into information. <br />
