Man vs. seagull above the city

Charles Glassenberg sadly watches some workers on the roof of the building next to his deal with some nesting gulls that were annoying other workers as they worked on the roof - they put their chicks in a cage and their nest in a bag, then took them downstairs:

... For the rest of the day the parent gulls swooped around, calling and squealing for their missing babies. They banged up against my window, several stories above, and swooped again and again over their abandoned nest site. ...