There are 2 sets of male-female pairs of the species which have different chromosomes. I am not sure what about her characterization is complete nonsense.
In white-striped males,
tan-striped males, white-striped females and tan-striped females a less enlightened person would see two sexes (male and female) and two color forms (white and tan).
> It's almost as if the White-throated Sparrow has four sexes.