In the penultimate show of the season, there's a seabird spectacle from South Stack on Anglesey. A location famed for its dark skies and cliff nesting birds, Gillian Burke explores why it’s such a hotspot for wildlife. Chris Packham and Michaela Strachan are on fledge watch at RSPB Arne in Dorset, as they are keen to see which of the nests empty before the end of the series, and Megan McCubbin returns to RSPB Arne to explore some of its sensational seasonal characters.