One of the most interesting aspects of nature photography is learning the habits of the animal you are photographing. When you figure out their habits you then have the necessary knowledge to "get the shot". When a chipmunk forages in the leaf litter on the forest floor it does so with two things on it's mind. Filling it's cheek pouches with seeds and watching for predators while doing so. When watching one forage I am reminded of the whack-a-mole game. The chipmunk will disappear for 10-15 seconds and then "pop up" to see if there is any danger around. After 2-4 seconds it resumes foraging for another 10-15 seconds until it pops up again. This is repeated until it fills it's cheeks or runs out of seeds in that area. The time to get the shot is of course when the chipmunk pops up!