“Species concepts are human classification systems, and everybody can disagree and everyone can be right,” she says. “You can use the phylogenetic [evolutionary relationships] species concept to determine what you’re going to call a species, which is what you are implying… We are using the morphological species concept and saying, if they look like this animal, then they are the animal.”

“If they look like this animal then they are the animal” really doesn’t sound like a particularly useful (or scientifically rigorous) position.

Not least because there are lots of animals that look alike but aren’t the same species.