It's feared that nearly a third of the 500 public swimming pools in Wales could close without more government support to tackle crippling energy bills. We dip into a swimming class in Powys and hear from Swim Wales about what can be done to keep pools open. Once common in our Welsh rivers, the rare freshwater pearl mussel is now critically endangered but efforts are being made to increase their numbers. And Birds of Conservation Concern in Wales - it's an early start for our ornithologist to witness a wildlife spectacle - it's Black Grouse lekking season!