Like every kingdom, the kingdom of birds has its multitude of the poor, the urban, public poor whose droppings whiten shingles and sidewalks, who pick and pick (but rarely choose) whatever meets their beaks: the daily litter in priceless Italian cities, and here, around City Hall— always underfoot, offending fastidious people with places to go. No one remembers how it happened, their decline, the near- abandonment of flight, the querulous murmurs, the garbage-filled crops. Once they were elegant, carefree; they called to each other in rich, deep voices, and we called them doves and welcomed them to our gardens.