Fox and coyote?

While camping with the Scouts I camera trapped these two critters.  I thought they were the same animal, but one of my leaders pointed out the time difference in the photos and suggested one was a coyote and the other a fox.  The motion in the second photo makes it so blurry that it's hard to tell.  I'm leaning towards thinking it's the same animal both times.

Fox: (?)

 Coyote: (?)