They are all still the same species, just different plumage.
They only do this with mammals as far as I'm aware.
hybridisation only happens because we have taken the animal out of it's natural habitat and put it in an environment where they can mix. Human have 99.8% similar DNA to chimps and ~70% similarity to a cabbage.
stem cells are not used for cloning, gametes are. to clone you take a fertilised egg and remove the DNA and put the clone DNA in.
As an atheist and someone who studies evolution, most people don't understand what evolution is, most people think it's just macro evolution. Micro evolution is what is really happening over a very long time. The best example is drug resistance in bacteria, you set out 100 agar dishes with colonies of E.coli, and let them replicate, then use an antibacterial to kill them, there is a good chance that one will survive and evolve into a new colony of resistant bacteria.