Hmmm...

Help!  I have no clue what kind of bird this is. I casually looked out the window and noticed a huge bird on the chimney of a house about 150+ yds/137+ m away.  I said to no one, as I often do, "Who are you?" then ran to the camera and took several shots.  Unfortunately, I don't have the hour or two it would take me to figure out what the heck kind of bird this is. With my luck,  just like the house sparrow, it's probably a super common one.  But I don't really care 'cuz it's just one more to add to my life list.

EDIT:  Thanks to SueSouth for providing an amazingly fast identification for me.  Naturally, it's the extremely common Rock pigeon.