So with Scottish trip next week I thought I'd look into Crossbills (que everyone giving up on this post)
I have a fairly basic microphone that I attach to my iPod touch and will spend at least sometime next week having a bit of a laugh and hopefully chasing round some Crossbills pointing it in their direction!
Quick bit of Internet research and Raven lite sonogram creator is being downloaded from here
5 Seconds of playing and I have manged to produce this from a Great Reed Warbler recording that I made using my iPod and microphone last year.
Just a shame the IQ 40 club haven't split Scottish Crossbill, oh no wait the BOU have.