In a couple of weeks, swifts will leave our skies and depart for their wintering grounds in Africa. Author and naturalist Mark Cocker has spent a lifetime observing them and Rachel meets him in Crail to chat about the migrating birds and his new book One Midsummer’s Day - Swifts and the Story of Life on Earth. Never a stranger to getting his hands dirty, Mark grabs a trowel and joins community volunteers on an archaeological dig on East Lomond Hill in Fife. Chairman of the Falkland Stewardship Trust Joe Fitzpatrick unearths the history behind some significant Pictish findings on the hill and chats to Mark about the importance of volunteer excavators. Producer Phil gets on the saddle with the Highland Blind Tandem Club for a cycle along the canal tow path in Inverness. Rachel’s on a hunt for the egg cases of the critically endangered flapper skate. She meets marine biologist Dr Lauren Smith at Cairnbulg Harbour near Fraserburgh to hear about the work going on to safeguard these huge creatures and map exactly where they are. Mark visits the National Museums Collection Centre in Edinburgh to discover how changes at the site are supporting the local urban biodiversity. We hear how the Museum is monitoring wildlife around the Centre from Curator of Entomology Ashleigh Whiffin. An Irish teenager has just become the youngest person to swim the North Channel from Northern Ireland to Scotland solo. 15-year-old Oscar Black joins Rachel and Mark to share his experience battling the currents to reach Scottish shores While following the Whithorn Way, Mark and Rachel stop at Prestwick, Ayrshire to visit Bruce’s Well, named after Robert The Bruce, King of Scotland from 1306 to 1329. They meet Julia Muir Watt of the Whithorn Way Trust and local historian Alasdair Malcolm to explore King Robert’s connection to the well. In 2003, part of a sea wall at Nigg Bay on the Cromarty Firth was deliberately breached to reconnect an area of land to the sea. Rachel catches up with Steph Elliot from the RSPB to discover how the intertidal habitat created is now benefiting bird life.