Was cycling through the new park and the magpie came out of nowhere. Didn't hear it coming at all. Bashed the back of my head a few times then got hold of my left ear. Then went for my right. Back to my left ear and even got hold of a piercing. Followed me for about 100m. Left ear is cut and bruised. Nasty little bugger. Right at a little playground too. Informed council, signs will be going up soon.