You also know that mother moose are defenders and will not tolerate a close approach from a human, especially in the deep woods. So you determine that your best chance to photograph a moose calf without harassing your subjects or getting yourself in trouble is from across a pond in moose country from mid June on when their mothers bring them out while they feed at ponds. Now you can plan to be there. But say that you want to target whitetail fawns at the same time. You can't do it.
Whitetails are hiders.
Deer mothers don't bring their babies out when they go to a moose pond to feed along the edge or to drink. Or say you're also targeting black bears. Maine's black bears number around 20,000. They slip through the same woods as the moose, but they don't display themselves often. They're hardly likely to pose at a moose pond that's got people hanging around it.