Mural of a Red Kite (a common raptor in this part of the UK).
It is on the side of the building with full access from the path next to it.

The artist, Curtis Hylton, has created murals around the UK & Europe and regularly uses flowers to build the image he wants.
I would recommend visiting the 'Legal Walls' in Winnesh, Reading (22 large walls) as there are usually a few of his pieces there!