Bird songs are plentiful during the spring, but have you ever wondered why do birds sing? Find out the reasons from a bird ...

Other birds, of course, are singing in March, for example, the American robin, but it seems they are more often vocal at dawn ...

The birds can produce over 24 beautiful and complex tunes. Both female and male cardinals sing but the female's song is often longer and more complex. They have a clear, whistling tone which may ...