Some birds demand attention with bright colours or dramatic size. Others earn it through movement.
The Grey Wagtail (Motacilla cinerea) belongs firmly to the second group. If you've ever walked along a clean stream or river in Ireland, you may have noticed a small bird constantly bobbing its long tail as it darts gracefully from stone to stone. It rarely stays still for long, giving the impression that it's always in a hurry.
Despite its name, the Grey…