whyevolutionistrue, who might be the last secularist in biology, reacts to ScAm magazine. Under the helminth Laura, this journal no place for scientody - although, I'd say the rot had set in at least by the middle 1990s.
Zonotrichia albicollis, a sparrow species, holds two "morphs". These are white and tan, which mate amongst white+tan... usually. At least 4% of the time they go white+white or tan+tan. Somehow the helmith Laura sees four genders here. That statement is a cultural one, as WEiT points out; not a biologic statement, on account that these four "genders" still divide by sex. White males shun white males; and so on.
Perhaps we be using Semitic genders for binary heterosexual males and females, and leave the IndoEuropean genders for the alphabet-soup.
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