Over the years I've taken several photographs of the Monnow bridge gatehouse in Monmouth. It is one of ony two remaining medieval fortified bridges in Britain and has been the subject of artists down the centuries. On a recent visit, as we passed over the bridge, I took this quick snap, prompted by the cloud of feral pigeons swirling around the roof of the gatehouse. There are usually pigeons to be seen on the building and I'm sure many use it as a nest site. They contributed something vital and transient to this view of the bridge and prompted me to ignore the view I usually choose (see here and here).
photo © T. Boughen Camera: Olympus OMD E-M10