The Flickertail, or Richardson's ground squirrel, Spermophilus richardsonii, is the un-official state animal. Seven to eight young are born in May and by June forage for grain and seeds with the mother.

Wangensteen Historical Library, Health Sciences Libraries, University of Minnesota:
Plate 60 from John James Audubon and Rev. John Bachman, The Quadrupeds of North America, quarto ed.