Grey Wagtail

Look for this slim, long-tailed bird bobbing its tail constantly as it darts along the edges of fast-flowing streams, weirs, and rivers, snapping up flies and other insects from rocks and shallow water. Its bright yellow underparts and habit of feeding right at the waterline make it easy to pick out even at a distance, and it will also forage around car parks, mill races, and urban riverbanks. It can be seen year-round in many areas, but is often easiest to find in autumn and winter when birds move to lower-altitude streams and are less hidden by summer vegetation.