Recently, a group of fourth graders joined "Pintail Partners"--a year-long collaborative research effort of scientists, students, classroom teachers, preservice teachers, museum educators, and university professors. Students and teachers followed satellite tracking data (marking the pintail duck's spring migration) and interacted with scientists via the internet. Looking to the quality of wildlife support in their own community, students gathered data regarding local weather patterns, food source availability, wetland disturbances, and geographic diversity. This article describes how fourth-grade students' data analysis supported scientists' theory of declining duck populations. (Contains 2 figures and 3 online resources.)