I know very well how evolution works ... and your comment in no way refutes or even responds to my point about your previous comment about "trade offs". As I pointed out, there are multiple populations of birds, and there's no zero sum game such that what happens to one population determines what happens to another ... that sort of thinking is behind the "if monkeys evolved into humans then why are there still monkeys" confusion of creationists.
> I think you might be a bit out of your depth here. You really seem to not know much about evolution.
Wow, such rude projection, coupled with bizarre strawmen and an apparent complete lack of understanding of what "zero-sum" means even after I explained the sense in which I was using it.
It seems to be a thing with them, e.g., "In what world do you think our energy needs plateau? [total misrepresentation of what their correspondent said] I'm always so surprised to see this 1970s hippie attitude making a comeback, especially since it makes less sense today than ever before."
In what world is it not a zero-sum game? You don't think that the human population has affected others? You are not aware of what keystone species are, like how wolves are so singularly important, they can literally force geographic changes to a region, which obviously has a massive effect on other species?
I think you might be a bit out of your depth here. You really seem to not know much about evolution.