They good Baiardo by a monster view,

  — A bird, and bigger than that courser — prest.

  Above three yards in length appeared to view

  The monster's beak; a bat in all the rest.

  Equipt with feathers, black as ink in hue,

  And piercing talons was the winged pest;

  An eye of fire it had, a cruel look,

  And, like ship-sails, two spreading pinions shook.