BIRD lovers are invited to take part in a national survey of Britain’s avian population at one of the Cotswold’s most popular attractions.

Visitors to Batsford Arboretum this Saturday and Sunday will be able to take part in the Big Garden Birdwatch run by the Royal Society for the Protection of Birds.

Participants will be provided with sheets to record their sightings and any findings will be reported back to the RSPB.