There is a huge flock of wild parrots living in SF. Every day around 4:00pm, the flock congregates at a waterfront park in the middle of the city to roost for the night. I'm now addicted to walking downtown to see these little guys. They are so sweet and will fly over and sit on your head and shoulders if you feed them sunflower seeds. As an added bonus, they'll poop on your clothes too.