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

Both the male and female American robin are gray-brown birds with yellow bills and reddish ... You'll often hear robins singing in the early morning. American robins frequently show up in yards ...

But can you tell a robin from a blackbird ... Sitting outside on a sunny day, you're very likely to hear a bird singing. Why, you might wonder, do birds sing? And why do they have so many ...