It's always tricky to gauge how many batteries you need for a wildlife shoot as you're pretty much at the mercy of your subjects, and they tend not to work to a schedule! With this in mind, although you'll always have a battery or two with your chosen package, it might be prudent to hire some extras.

To find power options specific to the model of camera you have selected, just head to the Accessories tab on the package you picked, and you'll find everything that's compatible with your chosen camera.