FIGHT! FIGHT!

I stopped in the Park on the way home from singing in a local care home this afternoon and noticed a terrific kerfuffle under a tree which turned out to be two bluetits having a fierce fight. They were completely oblivious to me, to the extent that I thought perhaps their feet were tangled together and they couldn't get away, but when I reached down to check they flew off separately for a few yards and started all over again. They were still a bit close to the path so I stood over them again and they flew under some shrubs and presumably continued under there. It was obviously very important in Bluetit World.

Look large to feel the fury.