Stable isotopes ([delta]D, [[delta].sup.13]C, [[delta].sup.15]N) reveal associations among geographic location and condition of Alaskan northern pintails

A combination of stable-isotope measurements of tissues representing different periods of dietary integration and body composition analyses was used to determine geospatial linkage of northern pintails breeding in Alaska. The results provide insight into the relationship among winter and spring location, distance traveled and arrival conditions.