What does it all mean?

We came home from church today and the back of our roof was covered in....pigeons. I've mentioned in my blog before about all the neighborhood animals stealing Trenton's food. I think they're back...in droves. It was a funny sight to drive up and see the back roofline covered in birds. Then, we noticed there was another dog in the back yard with Trenton. He was too small and too fast to photograph, but it was a funny sight. I though it was a rabbit at first. So what I want to know is it some sort of omen when you come home to a roof covered in pigeons? Why my house? I know...it must just be the local fare...kibbles and chunks - only the best for my neighborhood critters.