Snow Geese in PA

I've never before seen snow geese.  I've heard of them but this was a unique experience.  As I drove along Rt. 248 near Wilson, PA, I saw ahead a field that looked like it was covered with snow, but as I drove closer, I saw it was all geese.  This was just before Christmas 2014, maybe the 23rd or 24th.  I stopped and turned around to try to get pictures but the highway is two lane and very busy -- to dangerous to stop for very long.  I pulled into the parking lot of an old steel mill but I was still too far off to get a decent picture.  And by this time the bulk of the flock of thousands of birds were taking flight.  I drove back along the road and pulled off just opposite some of the remaining flock and got the picture below.  I almost got stuck in the mud!  But at least I got a picture of some of these beautiful birds.