I was outside around sunrise this morning and two corvids (I think) flew over me at one point. They were both largish (much bigger than a jay) and black, and made calls that sounded like generic cawing to my uneducated ears. Based on preliminary googling, I suppose they were either American Crow or Common Raven (I'm in SFBA at the moment). Alas, I saw them through thick foliage and far too briefly to photograph.
One of these days I'm going to learn some birds. But I'll probably learn some trees first. They're easier to spot :)