That particular coyote picture was taken with one of the new trail cams.
I've noticed that there are so many different lighting and shadow issues during the day it's difficult to count on good photos time after time.
If you change camera position to capture a cool shot like Bob did with his coyote pup next to the guzzler you then miss anything that's going on 3 or 4 feet to the side or at certain time of the day the sun might be right into the camera lens. It takes a lot of playing around to get the right camera position and when there's a lot of activity with squirrels and birds there's an incredible amount of wasted shots that need to be reviewed.
In general trail cameras are really designed for hunters to determine game habits, not high resolution wildlife photos. The latest trail cameras are getting much better offering 12 megapixel resolution and can take either video or stills.