Receding ice drove parallel expansions in Southern Ocean penguins by Cole, TL, Dutoit, L, Dussex, N, Hart, T, Alexander, A, Younger, JL, Clucas, GV, Frugone, MJ, Cherel, Y, Cuthbert, R, Ellenberg, U, Fiddaman, SR, Hiscock, J, Houston, D, Jouventin, P, Mattern, T, Miller, G, Miskelly, C, Nolan, P, Polito, MJ, Quillfeldt, P, Ryan, PG, Smith, A, Tennyson, AJD, Thompson, D