Well now. I strongly recommend you listen closely to both albums by the Imagined Village. Given that the second one is on Emmerson Corncrake Constantine records that might give you a clue. That's Mark Constantine, of the Sound Approach to Birding. The Corncrake should need little introduction. And Simon Emmerson of Working Week, producer with Realword/Gabriel/Baaba Maal and of course the man behind Afro Celt Soundsystem and now, with input from Paul Weller, Billy Bragg and many more, the founder of the Imagined Village. And a bit of a birder. You can get quite a list from Simon's various albums ... I spent a bit of time on tour with AfroCelts in the 90s and Godwits were a regular topic of conversation on the tour bus ...