by which you take to mean that he created all of the different animal species and the human species ex nihilo (out of nothing)?

how about different varieties of horses or cats or dogs?

how about different varieties of apples or roses?

I suppose one could make a case for different varieties not being species...

I don't see why you couldn't maintain that on day one (so to speak) God fixed the facts of physics (made the bits of matter come into existence) and imposed the laws of nature (including the law of natural selection). And from there... The laws acted upon the matter to eventually result in all the species and varieties that we see today. God would still have made all the species and varieties its just that instead of making them one at a time he could have just made the matter and imposed the laws and let things run their course...