We hear all about your sightings of swallows, a red-light thrush family and how you've been saving starlings.  As researchers at the University of Manchester create a way for seawater to be turned into drinking water, marine biologist Ken Whelan explains what impact that might have on our salmon. And  the sight of thousands of Grunion fish tumbling onto shore on wave after wave of Pacific surf is a truly extraordinary thing to witness – and is sometimes referred to as a “Grunion Invasion”. It's long been on Derek's "bucket list" - and recently, in California, he got to see this incredible phenomenon for himself. He tells us about his experience...