Geographic and seasonal variability in the isotopic niche of little auks

Fort, J., Cherel, Y., Harding, A.M.A., Welcker, J., Jakubas, D., Steen, H., Karnovsky, N.J., Gremillet, D. 2010. Geographic and seasonal variability in the isotopic niche of little auks. Marine Ecology-Progress Series 414: 293–302.