The extent of the new zoom

Saw this bird through a window quite a way off. I want it to be a warbler of some sort but wonder if it's a juvenile thrush. I've consulted my Observer's Book of Birds from P6 but I can't identify it. It's probably the most common bird in Scotland but I was quite excited.

Edit - thanks to Dave H I now know it to be a meadow pipit. Poor ornithological knowledge on my part.