It isn’t only Cubs fans who love Wrigley Field. “Pigeons like to roost on the trusses that support the upper deck,” said Paul Rathje, director of stadium operations at Wrigley Field for the last six years. “This causes problems for the people seated below.” Besides the lure of roosting in the structural beams, the pigeons are naturally attracted to the food purchased by the crowds of fans who fill the stands – a bird’s delight; a stadium director’s horror.