User blog comment:SuperFlash101/And there was much rejoicing: 'Phineas' up for 4 Daytime Emmys!/@comment-406459-20100517190014

Pigeons tend to poop on things, and there is a long history in pop culture of references to it, be it the old saying that "some days you're the pigeon, some days you're the statue," a Gary Larson cartoon of "a pigeon's view of the world" where everything has a target on it, or a memorable Nissan ad that once aired during the Super Bowl featuring a group of militaristic pigeons who are unable to hit their freshly-washed target. You-know-what happens, especially when pigeons are involved. I'd chalk it up more to coincidence.