November 22, 2014 2:31 PM Subscribe
Birds, like quite a few other animals, can exhibit Gynandromorphism. Homosexual behavior in birds is also common. The phenomenon of avian spontaneous sex reversal has been well-documented, starting with Aristotle. Now modern researchers have uncovered yet another way in which birds are hacking sex roles: scientists think white-throated sparrows may actually be evolving a second pair of sex chromosomes.
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