A study using stable isotope analysis to determine the wintering locations and diets of individual Ipswich sparrows, and to relate those data to breeding success, was started in 2006. Feather samples were collected from over 100 adults, and the fates of their 70 nests were followed. In spring and summer 2007, the sample size was increased and data on the arrival and pairing dates of returning birds was collected.
The 2006 progress report and 2007 final report are below:
2006 Progress ReportIpswich Isotopes Study 2006 Progress Report
2007 Final ReportIpswich Isotopes Study DaleThesis