Is whistling is a dying art?

Do you whistle while you work? It's meant to be a good thing but the skill of whistling may be running out of puff.

In a survey, around seventy per cent of those questioned say there aren't as many people doing it now compared with two or three decades ago. Some experts reckon it's partly due to so many people using earphones to listen to music - so they don't need to make their own. #BBCNolan