Playing chasey?

A post work walk at Te Wai Orea. A large part of the southern side of the lake is unavailable, and has been a for a few weeks. Council workmen are upgrading the paths and the facilities. They have already done the west, the north, and the east. 

I was in the right spot at the right time to capture two black swans. Either could have been my blip. I chose the second at the point where the chaser appears to be pecking the chased swan.