There has been a burst of activity of Tree Frogs Hyla arborea this week. I have heard lots of them on the days I have been out of the city. It will soon be time for them to find places in which to hibernate for the winter and I wonder whether all this calling is connected in some way to that? Folk tradition says that they call before it rains... well, it is raining now! I snapped this one in roadside vegetation, he posed nicely probably thinking he was out of sight.