You have to really like pigeons to welcome them on your roof and chimneys in numbers of this order: the potential for mess is considerable. The group, of which these are two thirds, were flying around looking for somewhere they could all land. The chimneys were the favoured site but they couldn't accommodate them all and apparently the roof gables just weren't good enough. The symmetry of this shot appealed to me when I saw it through the viewfinder, and felt it might look better in black and white - but it doesn't.
photo © T. Boughen Camera: Olympus OMD E-M10