SUMMER visiting nightingales will soon be appearing in Britain, with their songs ringing out from dense scrub and woodland.

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 ...