I went out at lunch time, when I was checking out the trees for herons with binoculars, I suddenly felt something, turned around to see two GBH chasing each other towards me, it was quite a feeling, with two big birds flying at me, but I looked up maybe too soon, they changed directions at a couple of metres. I don't know how the picture would turn out had I have the opportunity to take photos. I had the binoculars instead, but that feeling was something.