Not just Pittsburgh I would think, but all big bumbling cities with their underlying humming sound of life. Pigeons teaching people in their fly formations like a United Nations flag. Every color grey, white spots under bellies or hidden within wings. Ah there–in the middle of the flock the rare cinnamon and ivory fellow stands out to the sight yet still in perfect sync within the swoop.
Cities with their natural habitat that pigeons teach.
The Lost Children: A Charity Anthology