>>12768161If a species has a preference in food, or habitat, or whatever other resource of the environment, then it has ecological niche. And of course they do - zebras eat grass not meat, lions eat meat not grass, even though both meat and grass are valid food sources and both can be found in the shared habitat of zebras and lions. Really, this is common sense stuff and I don't know where you are coming from to deny this (unless this is some sort of retarded /sci/ meme that I'm not aware of yet)