Two days ago, a bird flew into the big glass doors of my living room. I didn’t think much of it, birds fly into glass windows all the time. Whatever. Then, the next day, a very similar-looking bird flew into the same glass door again, but this time, it seemed more under control. The bird came up to the window, pecked at it a few times, then flew onto a nearby tree branch, only to come over and peck a couple more times before flying away. I went out to see if there was a nest up there or maybe...