A dawn chorus in spring

It happens every morning at this time of year - in the

countryside and in towns - but how many of us have ever really

listened to the dawn chorus? Why do the birds start singing before

the sun even rises and does the early bird really catch the worm?

RSPB wildlife adviser Ben Andrew talks to Jane Markham about the

birds as they start to sing in an Oxfordshire garden, identifying

the early risers and what you should listen out for.