Nest Building

I spotted these pigeons on a window ledge on the 3rd floor of a University of Sheffield building. The glass was dirty and the pigeons kept moving! Very inconsiderate of them! It was fun watching one of the pair flying back and forth bringing twigs which his mate then proceeded to add to the nest structure.

My original photo was considerably more blurred than this one. However my friend and fellow blipper Maurice has very kindly done some "adjustments". Thank you Maurice.