More short-haired bumblebees are to be reintroduced to the countryside in Kent.
The species of bee was once widespread across the south of England but vanished in 1988.
Last year, 50 queens were collected in southern Sweden and released onto the RSPB's Dungeness nature reserve.
More short-haired bumblebees, currently in quarantine to check for parasites, are due to join them on Monday.
The RSPB's nature reserve at Dungeness is home to most of the UK's seven species of rare bumblebee.