26 Which exposure mode you use is often just a matter of personal taste. You can, after all, use your Nikon’s P, A, S or M modes and get exactly the same result in your images.
For wildlife, you frequently want to restrict the depth of field as much as possible to avoid distracting backgrounds and to keep the shutter speed high. For this reason aperture-priority (A) mode is best starting point – you can then use exposure compensation to change the brightness to suit. A more professional approach is to use manual (M) mode. You need to be more on the ball with this, but it has the advantage that exposure compensation is that much faster to implement.