Great to get close shots like this! The car makes a fine blind. You mentioned resting the camera on the window sill. Works great, and I know you turned your engine off. One time in Montana, I was so excited to see a huge black bear right along the highway and pulled over to shoot some pictures. Without thinking about it, I forgot to turn the engine off. The photos of the bear would have been great, but they ended up a bit fuzzy. The vibration of the engine caused it. I was so mad at myself I haven't got over it, and that was a few years back now.