Alan:
I have been a serious wildlife/nature photographer for 20 years and a hunter for 35. I learned one thing early on, you either hunt or photograph. I do not mean carring a small camera for documenting success, I mean wildlife photography. For that, it all depends on which lens you are using. I have owned everything from ultra wide angle (Nikon and Canon) to super telephotos (Nikon and Canon 300 f:2.8,500 f:/4 and f:4 I.S., and 600 f:/4 I.S. as well as the bodies to go along with them(F-5, F-100, D1H, 10D, 20D, 1DMK2. You need and want a tripod with a really strong ballhead or Wimberley head for the BIG lenses. And a sturdy tripod with a medium weight ballhead for smaller lenses, even I.S. lenses. These things you cannot carry and hunt. A good GITZO Carbon Fiber monopod is OK for sporting events, but not all that good in the woods. The best all around lens you could get IMO is the Canon 70-200 f:/2.8 I.S. and a smaller zoom W/A (i.e. 17 -40) Still quite a handfull. So either hunt or photograph. I actually hunted with a camera instead of a bow or gun for a few seasons, it was a blast. When hunting you might consider a smaller camera a high end P&S will give you good results. These are just my findings from years of trying to do both, and the thing I found is that neither turns out well.
Good Luck
Frank