Feral or Town Pigeons are a common sight in our major cities, using manmade structures in place of rocks for roosting

Above in London's Trafalgar Square . . .

and at the Houses of Parliament

Uninhibited at Paris's Eiffel Tower (but they are French!)

and at Notre Dame cathedral (above) and the Louvre (below)

Using the shower/bathroom in Rome

and being fed by tourists in Venice

At the seat of Government in Moscow, both at the Duma (parliament)

and braving the cold in Red Square
At Moscow's metro stations
. . . the Lenin Library (statue of Dostoyevsky)
. . . and Red square again.