Plot: In an extended Springwatch, Chris Packham, Martin Hughes-Games and Michaela Strachan continue their wildlife watch live from the RSPB's Minsmere reserve in Suffolk, and Iolo Williams has the latest from the Farne Islands in Northumberland. There is drama in the heron nests, an introduction to some of the strangest and noisiest nesting seabirds, and incredible footage from one of the UK's most spectacular predators