With Springwatch now in full swing and the Dorset heathland making for a truly tremendous cast of characters, some exciting new nests are launched. Chris Packham and Michaela Strachan unpack the overnight drama from the key characters, while there's a search of some of the heathland’s resplendent inverts. Gillian Burke continues her Snowdonia exploration and is out looking for Britain's only venomous snake, the adder. There's also the 'swift man’, an 81-year-old who has dedicated over a decade to building boxes for swifts. His current total is 64,000, and he shows no signs of stopping!