Wheatear

The name "wheatear" is not derived from "wheat" or any sense of "ear", but is a 16th-century linguistic corruption of "white" and "arse", referring to the prominent white rump found in most species.

As they flew away, all I could see was their dancing white bits. Never seen them around here at all, last time we saw them was on the coast in Wales where they constantly danced before us down the coastal path.

Oh Lord, What a morning!