Yellow Wagtail (Motacilla flava), Startop's End Reservoir, Nr Tring, Hertfordshire 25/05/2013. This was one of those unexpected encounters with a bird that was uncharacteristically cooperative! Walking along the SW shoreline, this migrant just dropped in some way in front of me. I was very surprised when it allowed me to come within photographic range and continued to feed and call whilst I observed. Little did I know that the joy of the Yellow Wagtail encounter would be increased with my first sighting of a dazzling European Roller later that afternoon, in Hampshire!