Iolo starts in Pembrokeshire with red deer, seals and a rare sighting of red squirrels. In the Brecon Beacons he discovers spectacular waterfalls, amazing cave structures and bats hiding in dungeons, and also nesting hobbies, goshawks and some stunning birds in Glamorgan and Gwent.
Iolo journeys through the heart of Wales to witness extraordinary displays from hen harriers and black grouse. He then heads west to Cardigan Bay to see some colourful lizards, and ends in Aberystwyth with 20,000 starlings.
This episode, filmed in the rugged north of Wales, includes an amazing sequence of an osprey hunting over open water, while visitors at nearby Portmeirion sit unaware of the spectacle before them.
