Frank, practice this with auto-ISO perhaps?
Manual Mode. Fix speed to between 1/500 - 1/1000". Fix aperture to f/5.6. Set Auto-ISO to on to take care of the exposure.
Now, set focusing to back of camera on AE-L button.
Set AF-C. Choose one of the clustered AF point settings.
Set Ch for burst shooting.
One initial AF lock-on is not always enough! So perform AF lock-on more than once with your thumb as you are panning and tracking the bird while engaging the shutter to make bursts of shots with your other finger.
Remember the camera does not do the tracking of the bird, rather the photographer does the tracking of the bird with the help of the camera's tracking settings.
I'm sure you will get this. Practice makes perfect, yes??