This building in North Yorkshire, England is situated on the migration routes of wild geese. In cloudy weather, the gray color of the wall blends into the color of the sky with the result that many birds fly beak first into the side of the building. The owner contacted the authorities of the city for assistance and they have appealed to the public for artists who have a good concept for the wall’s design.
Here is one of the options
Here's a photoshopper's variant