Went yesterday to Serpentine Fen after dropping my daughter off at daycare and my wife off at university. It was nice to be able to get out and do some shooting with the 70-200mm f/2.8 VRII again and the TC-20EIII. I had the opportunity to get the setings right on the camera for my 70-200mm f/2.8 VRII attached to the TC-20EIII and the response on the camera was quick and efficient. The D300s is still a heck of a capable camera (even at 4 years old). Until they come out with a D400, I won't be changing over.
Setting the AE-L & AF-L at Matrix-metering allowed me to track my subjects on 21 points. I use 21 points rather than 51 because it allows for a quicker response. You don't utilize all 51 points and it allows the camera to respond quicker to any movement. Hence the reason I was able to lock on quickly onto the Great Blue Heron that burst out from the foilage.
In flight shots require a quick response and a light camera lens. Hence the reason why I am also looking at the purchase eventually of a 300mm f/2.8 VRII. But the 70-200mm +TC-20EIII will work pretty decently for the time being.