You do not get the chance to photograph Grasshopper warblers every day. This was taken from the car window and the bird was showing well as they tend to do when they first arrive on territory.
Grasshopper warbler, Locustella naevia, single bird singing on fence, Warwickshire, April 2019. Olympus em1 Mk2. 300mm f4 lens plus 1.4 extender. 400 iso. 1600th at f5,6