singing Lapland Bunting

parked at the toilet block at Evie, Orkney has the best and most widespread public toilets of anywhere in the UK by the way, when I noticed a House Sparrow on the adjacent barn roof -- as I walked away I heard a Lapland Bunting singing and turned around to actually look at the sparrow! it flew onto the adjacent gate into the light of course and then flew off north-west -- next stop who knows?