![Grasshopper Warbler Grasshopper Warbler](http://birdnews.s3.amazonaws.com/bucks/20120416080823360.jpg)
Grasshopper Warbler
Marsworth Reservoir (Bucks section), 14th April 2012
Showing well for a few minutes in full song opposite lock 41
© John Foster
Grasshopper Warbler
Marsworth Reservoir (Bucks section), 14th April 2012
Showing well for a few minutes in full song opposite lock 41
© John Foster