You lot crack me up with your nature knowledge Its good, not taking the piss, but funny for me personally cos im a cityboy
I used to make spiders fight when I was a kid, find two beasty ****ers and use a stick to transfer from one web to the other. Bit cruel looking back really.
Normal if a sparrow hawk is around, you will hear those sort of noises, distress calls. It's basically a warning for every other bird to fook off.
Just a typical bird of prey, nothing evil about it, no different to us eating meat. Don't watch in front of the kids...