To those familiar with the Corvus Folio the the seven winged bird is probably the most iconic and image among the individual prints. The image generally referred to as Seven Wings was the first leaf of the Newgrange folio(it is number three in the Ur Folio and seven in the Yi). The bird figures heavily in the theories of all three schools of the Folio and appears tangentially in some broader mythologies.
THE ELUSIVE BIRD: SEVEN WINGS IN WORLD MYTHOLOGY