Birding in BC Community

I was at the great blue heron nests in Stanley Park in late April and a number of them were fighting fairly viciously. Many had wounded wings and missing feathers. I got the shot below. I can guess, but can anyone explain this behaviour?

Smithers

Heron 2021-04-21169A3983

The Pacific Great Blue Heron's are fighting over nesting sites!

Some nests are better than others!

Also their fighting for dominance!