In 1532, the geographer Jacob Ziegler of Bavaria proposed the theory that the creatures fell out of the sky during stormy weather and then died suddenly when the grass grew in spring.

lol, that's dumb

This description was contradicted by natural historian Ole Worm, …

well duh, of course people thought that was stupi—

… who accepted that lemmings could fall out of the sky, but claimed that they had been brought over by the wind rather than created by spontaneous generation.

oh