blog postsPurple martin migration behavior perplexes researchersSep 30, 2019 9:15 am by Tiffany JolleyIllinois Natural History SurveyShare on FacebookTweetEmailAuriel Fournier, the director of the Forbes Biological Station at the Illinois Natural History Survey, studies the migratory behavior of purple martins.Photo by Tiffany JolleyImagesPurple martins will soon migrate south for their usual wintertime retreat, but this time the birds will be wearing what look like little backpacks, as scientists plan to track their roosting sites along the way.Share on FacebookTweetEmail