AI focus settings on 1D mkIV ?

I am testing and testing various CFnIII settings to achieve a high successrate on shooting fast moving birds. Out here is a ton of experience to draw on, so feel free to advice me.
CFnIII AI Servo Tracking sensitivity is set to a step right of senter. AI Servo 1st/2nd img priority is set to (0) AF priority/Tracking priority. AF Tracking method is set to (1) Continous AF track priority.

All advice is appreciated!

On my 1D III I have tracking sensitivity set one to the left of center (slower). This helps if your AF point slips off the bird as the camera won't be quick to try and focus on the background. My tracking is almost always at 0 unless I know for sure I will have objects come between me and the subject. YMMV with the IV, but give it a try.

NOTE: Tracking method on the MKIII is inactive if one AF point is being used. It only works with auto AF selection or expanded single point. This may not be the case with the MkIV.

That is the case with the 1D Mark IV and 7D as well. Per definition, since the AF tracking method describes what happens when:

1. You start tracking with the main focus point (only the 7D and 1D Mark IV allows this to be something else than the center point).
   
2. Tracking is handed over to some other point.
   
3. Something comes in and covers the main focus point and is at a closer range than the currently tracking point.

I use one slot into the slow range of tracking sensitivity as well and for the same reasons mentioned above. I also use AF point expansion when tracking against a cluttered background and if there is time when I am tracking birds against a clear sky I have found 45 point expansion or ring of fire will nail the birds in flight nearly 100% of the time. If they fly into a cluttered background you can lose them at times. All other settings are as mentioned above.

I also use manual mode and have two settings, one for the cluttered background, normally against trees, where it isn't as bright and the other registered to the * button where so I can shoot against the sky at a different and accurate exposure.

Thanks to all for replying. Got it wrong, single point was the setting in AI, now it chooses all points. CFnIII AI Servo tracking set to half slow, Servo tracking method set to Main Focus Priority, AF expansion set with selected points set to: All 45 points.
It's time for another biketrip and test!

Result is much better but too few birds in the sky - I miss them!