White admiral butterflies are constantly on the move, which can make them quite difficult to photograph. Look for them in shady groves in search of rotting fruit or animal dung to consume; they actually very rarely choose flowers for food. They lay their eggs on cottonwood, aspen, or willow trees. The caterpillar of white admirals look strikingly similar to bird droppings. The red-spotted purple butterfly, which habitat resides further south, is considered the same species although very different in appearance.