Alright, for the sake of argument
here are some beneficial human mutations
The fact that these are all mutations that make a small difference to the phenotype of the organism carrying them is exactly what evolutionary biology predicts. Small changes
co-evolving, to generate the sort of systems that you are talking about. No one claims that a dinosaur was one day born with wings and that was a bird. Rather something more like this probably occurred:
-Some dinosaurs developed arms that had "wing like features" - perhaps an extra flap of skin - this mutation proved beneficial for some reason, maybe because it allowed the dinosaurs that carried to cool themselves more efficiently.
-Natural selection continued to favour larger flaps ‘till one day the flap-armed dinosaurs could use these flaps to slow their decent from trees, meaning they could perhaps live high up in trees and ambush ground dwelling species. (There are snakes alive today that do almost exactly this.) At the same time animals that had randomly mutated to have slightly lighter bones or feather like scales will be favoured - because these mutations wil allow a carrier to better expolit this way of life
-From here NS could favour bigger and bigger flaps till you get something akin to the gliding mammals like flying foxes and sugar gliders.
-Finally flying as we know it is favoured as the flaps turn into true wings. All along the way other small step mutations that give rise to feathers, beaks, hollow bones and the sort of brain software required for flight are selected for.
This is a short sketch of what really happened, an of course we weren’t there so we will never no the actually details of how each step occurred. What the example hopefully does show you is that evolutionary biology doesn’t require saltations, and that the big differences that we observe between what creationists call kinds is the result of millions of years of evolutionary separation between major lineages and
compounding small step mutations.