In Greek mythology, a little owl (Athene noctua) traditionally represents or accompanies Athena, the virgin goddess of wisdom, or Minerva, her syncretic incarnation in Roman mythology. Because of such association, the bird — often referred to as the "owl of Athena" or the "owl of Minerva" — has been used as a symbol of knowledge, wisdom, perspicacity and erudition throughout the Western world.
The reasons behind the association of Athena and the owl are lost in time. Some mythographers, such as David Kinsley and Martin P. Nilsson suggest that she may descend from a Minoan palace goddess associated with birds and Marija Gimbutas claim to trace Athena's origins as an Old European bird and snake goddess.
On the other hand, Cynthia Berger theorizes about the appeal of some characteristics of owls —such as their ability to see in the dark— to be used as symbol of wisdom while others, such as William Geoffrey Arnott, propose a simple association between founding myths of Athens and the significant number of little owls in the region (a fact noted since antiquity by Aristophanes in The Birds and Lysistrata).
In any case, the city of Athens seems to have adopted the owl as proof of allegiance to its patron virgin goddess, which according to a popular etiological myth reproduced on the West pediment of the Parthenon, secured the favor of its citizens by providing them with a more enticing gift than Poseidon.