Or, a bald eagle. That's why I try to always take along my camera. I almost didn't yesterday because the weather was rainy but how glad I am I did. Two large birds were in the road near the bridge (a little traveled road, fortunately) just in front of my car as I headed to the grocery store. I stopped immediately and reached for my camera as they took off. One was dark but the other had a white head and white tail and settled in a nearby tree. My first shots were through the windshield but then, when the bird stayed put, I set the emergency brake and slowly got out.
I got a few more shots before the eagle became uncomfortable with the paparazzi.
Always take along your camera!