Behind the Cathedral, in a tree covered with mature flower heads, every morning for several days some pigeons got into the tree and voraciously ate something, maybe bugs, maybe berries, maybe seeds; I don't know what, but eat and eat they did, pretty much oblivious to human passers by who streamed by with their eye level being just about level with many of the birds. It was a movie opportunity not to be missed.
The birds persisted in this activity for several days. Then they stopped. Whatever it was that they were eating had either lost its attraction or had been totally consumed.