Bridge, E. S., Fudickar, A. M., Kelly, J. F., Contina, A., & Rohwer, S. (2011).
Causes of bimodal stable isotope signatures in the feathers of a molt-migrant songbird. Canadian Journal
of Zoology-Revue Canadienne de Zoologie, 89, 951-959. doi:10.1139/Z11-064.
