The author asserts that Freud knew only one dream symbolism of the bird: '… that it represents masturbation, since the sensation of flying and phallic erection are similar'. He notes that in today's slang, 'bird' means girl, but he fails to mention that Freud made this connection in the Schreber case. Veaszy-Wagner describes two additional symbolic meanings for the bird: in a North Eurasian folk tale, the Swan Maidens symbolize the feeding mother's vanishing breast; and in Bosch's Triptych, the chicken-headed Satan is symbolic of a moronic child untouched by a trace of maternal warmth.