There are no pigeons, crows or other birds within the Kremlin walls. This HAWK is the reason!
There are five guards with hawks stationed around the Kremlin grounds. The birds are smart
enough to know that if they fly into the Kremlin grounds, they are instant “hawk food”. It
works and the statues, and gold domes on the churches stay clean. Once you walk out through
the Kremlin wall you see thousands of birds every where.