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FIGURE 8-30 Gynandromorph This rare zebra finch has dull female plumage on one side of the body and bright male plumage on the other side.
Neural, not gonadal, origin of brain sex differences in a gynandromorphic finch. Agate RJ, Grisham W, Wade J, Mann S, Wingfield J, Schanen C, Palotie A, Arnold AP. Proc Natl Acad Sci U S A. 2003 Apr 15; 100 (8): 4873-8. Copyright (2003) National Academy of Sciences, U.S.A.