Ok here is a top and bottom comparison. I wasn't able to do side by side but you can still see the difference. These are not both the same picture but they are both similar enough to show as an example. They were both taken within a second of each other. As you can see the one on the bottom is over exposed and the light is harsh on the bird's front. But with these two things changed: exposure compensation down half a stop and white balance changed to "direct sunlight" you can see the difference. It may not seem that significant to some people but if you want to enter one in a contest or something, you have to change your settings to adapt to the lighting situation. If you have any questions on how to do these things please comment.
Posted by John Mark Simmons
With settings changed