Chris Packham and Michaela Strachan dig deeper into the behaviours seen on the live nest cameras, while Megan McCubbin explores a quarry on the Isle of Purbeck with special importance for bats.

In the final episode of the series, all eyes are on the nests at RSPB Arne in Dorset. Will they fledge before the night is over? Meanwhile, Megan McCubbin explores the peripheries of the reserve.