Wildlife Q&A - Why do you Choose Aperture Priority vs. Manual?

Wildlife Q&A - Why do you Choose Aperture Priority vs. Manual?

Bruce Terrill asks:

Just checking your settings and I was wondering how often you chose Aperture Priority over Manual and why? I also know that you use Auto ISO a lot and I was wondering what you chose/choose as your upper limit for the Auto ISO?
Nature photography has become a very passionate hobby of mine and whenever I get a chance I love to get outside and enjoy being outdoors. I am also the co-owner of KGM Expressions, a wedding and portrait photography business, with my wife Kim. This is how we make our living and I love that we get to do that together.