Heron bringing in nest material

Finally got out to do some nature photography and found exactly what I was looking for. The herons at Hartsholme park in Lincoln are busy nest building on heron Island . 
I also went to Lincoln cathedral to try and get a better shot of the East window, while I was there I asked about it with the duty priest. It turns out he is also fascinated with this window and still has not completely figured it out , but  is writing a pamphlet about it .