Meow (female) would kill anything that moved. I was very thankful for my thick down comforter, but a bit sad that I had to use it during the summer in Colorado in our house without AC. Bed mice and all... Meow was allowed outside, and used to hang out in the bushes under my mother's bird feeder, and she'd kill a few a week. I saw her jump about four feet into the air to catch a giant moth in her mouth. She also caught birds that were just jumping around in the lawn.
Loki (boy) once found a baby rabbit in the window well. It couldn't jump out, because it was so small. We found them, because we heard the rabbit screaming. Loki was grooming it, and it was one seriously scared, wet rabbit. My kid brother, Loki's personal slave, tries to tell people that Loki was just trying to calm it before the kill, but it happend more than just the once. Loki is such a bad hunter that he rarely even plays with toys. He's a very dumb cat, though, in just about everything. Very sweet, though.
Bella (female) is a fierce huntress. I imagine that if she ever got out, there wouldn't be a bird or small rodent left alive in San Diego. She kills spiders and other gross things for me, but doesn't eat them, she leaves cleanup for Mommy.
Rowan (male) is absolutely hopeless. Apparently I'm no good at teaching hunting, since I found him at about 4 weeks. Bella has taught him quite a lot, though. He sometimes plays with fur mousie toys, and Bella taught him how to stalk up on the birdies outside (at my future in-law's) so they don't all fly away. I think that he's too sweet to actually kill anything, though. Even the spiders he's gone after he just bats around like a mousie toy, and if he's killed any, it's been accidental. When he gets excited, he has a little prancing jog that's absolutely adorable, but scares any sort of prey off.