It's her fault

There's usually a woman involved when two males have a bit of a go, and this was no exception. She was quietly trying to collect a few nice dead leaves to give her nest a bit of a make-over, and these two came down spoiling for a fight. I think they were both after her leaves, but she was having none of it. After a quick bit of a beak punch-up and a lot of flapping around, they flew off. The lady retained her leaves.