Manuscript illustration of Santiago de Cárdenas (Callao, 1726 - Lima, 1766), Peruvian inventor and craftsman considered a precursor of aviation and ornithology in Peru.
The document presents the studies and observations of De Cárdenas about the anatomy and flight of birds, from which he postulates the possibility of human flight through the construction of a sophisticated machine.
In particular, we observe a bird in flight -a condor- supporting another animal -a ram- with its beak; while, in the lower part, some feathers are shown in a diagram.