Purple martins are indigenous to Cahokia Mounds. This illustration shows how Native Americans might have housed them in gourds.
Purple martins are indigenous to Cahokia Mounds. This illustration shows how Native Americans might have housed them in gourds. Cahokia Mounds State Historic Site
Purple martins are indigenous to Cahokia Mounds. This illustration shows how Native Americans might have housed them in gourds. Cahokia Mounds State Historic Site

Learn about purple martins at Cahokia Mounds

June 10, 2015 05:59 AM