Great British Birdwatch: Watch the birdie as big survey returns

Experts from Shropshire said those taking part may be rewarded by spotting unusual migrant birds.

More than half a million people are expected to take part in this year's RSPB event, which is taking place over three days for the first time.

The RSPB said this winter there had been reports of hundreds of waxwings, birds with dusky pink colouring with a black strip across the eye and a punk-like crest, arriving along the east coast from Scandinavia and dispersing as far as Ireland and Wales.

Waxwings do not visit the UK every year, but arrive in droves every seven or eight years, when food is scarce in their northern breeding grounds.

Households with rowan or crab-apple trees in their garden in particular should look out for the "charismatic migrants", the RSPB said.

Nature lovers should also keep an eye out for other Scandinavian visitors including redwings and fieldfares, which are also making the most of the UK's bumper berry crop.

The survey was running from today until Monday, with members of the public asked to spend one hour watching and recording the birds in their garden or local public space.

People taking part are also being urged to report some of the other wildlife they have seen in their gardens in the past year, including grass snakes, hedgehogs, stag beetles, stoats and moles.

John Hughes, from Shropshire Wildlife Trust, said: "One of the interesting things is the size of what goes on. It involves thousands of people and it is reckoned to be the world's biggest wildlife recording and observation scheme.

"Being part of that is a wonderful thing. It also highlights the importance of gardens and parks. We have lost so much of where birds go which has meant places like gardens have become really important."

A bird-watching taster day will be held by the RSPB at Dorothy Clive Gardens, near Market Drayton, tomorrow(SUN). As well as trying out binoculars and telescopes to spot wildlife, families can and take part in some free activities at the event which will run from 10am until 5.30pm. People can also get tips and advice on giving nature a home, find out about the kids club, or become a member. The event will run from 10am until 5.30pm. To find out more visit ww2.rspb.org.uk