I recently saw a commotion in our garden - one male blackbird attacking another one quite viciously. Even when the one being attacked was on its back, the other blackbird continued pecking at it. I went out and the aggressor flew a few yards away, but continued to watch. The other bird just lay with its eyes wide open, obviously in a state of shock. I kept an eye on them and, although the victor didn't go back to the other bird, he continued to walk around it as though daring it to move. When I went out this morning, sadly, it was dead. Has anyone else seen this? Although I've seen them fighting before, I hadn't realised that blackbirds could kill one another. It's not mating time or a time of year when this sort of aggression would be understandable.