It has been known for some time now that the Brown Hairstreak are gradually spreading east from Worcestershire into Warwickshire. Unfortunately, the expansion isn't expanding as fast as we'd like it to. The county boundary runs along a busy road and is bordered by dense woodland and built up areas in parts. Last season, we found quite a few eggs close to the border in Worcestershire but only a few actually inside Warwickshire. Our main breakthrough was finding 19 eggs just inside Warwickshire near a place called Cookhill. However, i estimate around 8397589178975894 deer are in residence there and much of the blackthorn with eggs on was browsed. Visits to some promising looking ash trees during the flight period unfortunately yielded no sightings what so ever but we all know how elusive...