Adelie penguins navigation. Research and photography by R. L. Penney J. T. Emlen. John Hopkins University and the University of Wisconsin. Research supported by the National Science Foundation and Office of Antarctic Program. Additional photography by Sam Dunton from the Animal Behaviour Laboratory. The Institute for Research in Animal Behaviour--Film credits. "A Sterling Educational film. Records the life cycle of the Adélie penguins, showing the trek of the adult bird over the frozen sea in early spring to the breeding grounds, their courting behavior and nesting habits, their enemies, and the rigors and beauties of their icy habitat"--Worldcat.