title: Call types of the Rana pipiens complex in Illinois.
abstract: The presence of western, eastern, and northern call types of the Rana pipiens complex in Illinois supports evidence from the western United States that this complex can no longer be regarded as one species.
mesh_terms: D000818:Animals; D007087:Illinois; D011894:Rana pipiens / Q000033:anatomy & histology / Q000145:classification; D013045:Species Specificity; D014481:United States; D014828:Vocalization, Animal