Warbirds over Waikari

Warbirds over Wanaka is an international air show held in Wanaka (NZ) where they showcase aeroplanes that have participated in wars.

I think these two hawks were confused because they were battling over Waikari instead of Wanaka.

If you view in large you will see that the bottom hawk is flying upside down to rake at the hawk above him. Not very clear I'm afraid but the best I could do in a hurry through my windscreen.