eric: led by entomologist nikki gammans, they're on the trail of endangered bumblebees. dr. ees. these guys are specifically here to see rare bees, so no pressure, you two. eric: their hunting ground is the dungeness national nature reserve on the strait of dover. for the past decade, dr. gammans has been monitoring bees for the bumblebee conservation trust. dr. gammans: if you just take the uk alone, we have one in three of our bee species is actually classed as rare or threatened. we've had two species go extinct in the uk and a further seven are rare and threatened of just our bumblebees. eric: it's not just the wildlife that's disappearing, but the wild land they once depended on. dr. gammans: over the last 60, 70 years, we've lost over 97% of our ancient wildflower meadows. eric: as well as counting bees, dr. gammans is planting bee-friendly flowers, and today there's an unexpected find, a rare bee she feared was gone for good. male: want another pot? dr. gammans: yeah, if you've got another pot. oh, wonderful. brilliant. there we go. this is one of the uk's rarest bumbl