Hi Joel, The jay is a great pose. I need to put some proper perches near my feeders (assuming that is what you used for this shot). I usually rely on some nearby trees, but with the leaves closing in there is often something in the way. The 600 hurts the pocket book, but the performance alone and w the 1.4X III is superb - you should see the RAW file of that bluebird on a big monitor. That said, I have been using my 300 2.8II w the 2X III lately for walking around avian photos. I also carry the 600 but need a monopod whereas the 300 + 2X is easy to handhold. I guess you know how the 600 handles if you have the version I 500. I think your avian interest and talent means you NEED the 600.![]()