Kevin,

If you are hunting with your Red Tail, you are using operant conditioning already. It does work the same as it does with your bird dogs, in theory. Only the application and the end results are going to be different.

There are tons of books out there on Operant conditioning and plenty of videos, but probably not many of hawks being trained.

What is it that you want your hawk to do? If you explain that in detail, I am sure I, or plenty of others on this forum, can help you achieve your goal.