Wtf is this argument? Swinging things applies other forces besides your own power and speed, and since you brought up those two forces you must realize there’s a minimum of both that must be applied in order to swing an object properly and you’d also know full well as Newton’s third law of motion dictates that when said swinging object meets the object at rest that the sum of those forces will be exerted back onto the swinging object. Every choice made equals bird death. He didn’t flick it on the nose, he didn’t show it up slightly, he didn’t swing it into some software brush or a beach ball or an elastic fence, he swung it into a brick wall. A + B = C. Anything else is just conjecture on your end, made in some vain attempt to justify brutish thuggery just because the victim was an animal you don’t respect.

Try it yourself. Get about two feet of rope or something. Tie an egg to the end. See exactly how much speed and power you have to use to get it to properly swing. Then swing it into a brick wall and try not to break the egg. Make sure to film the attempt, I’d love to see it.