The name of the game in wildlife photography—whether you’re trying to capture a herd of elephants on the Serengeti plains or squirrels in your backyard—is patience. Wild animals are going to do what they’re going to do. Unfortunately, you can’t ask them to look this way, do something cute, or stand where the light is better.
You have to be there, and ready, when they decide to look cute or do something interesting. Be prepared to wait, and wait, and wait—it takes a long time to get good wildlife shots, even longer to make great ones.- Cary Wolinsky and Bob Caputo, National Geographic.