Who has been eating the strawberries?

The Mystery of the Disappearing Strawberries
Gardening Club have been carefully tending to the strawberry plants and were looking forward to a bumper crop this year.  Just before the half term holiday the children had carefully laid the ripening fruit on a bed of straw, to keep the slugs away.  Returning to school a week later they were looking forward to eating the ripened fruit only to find ... the plants stripped bare!  Where had the strawberries gone?