Emperor penguins breeding on iceshelves.

por Peter T Fretwell, Phil N Trathan, Barbara Wienecke, Gerald L Kooyman
Publicado 2014

An emperor penguin population estimate: the first global, synoptic survey of a species from space.

por Peter T Fretwell, Michelle A Larue, Paul Morin, Gerald L Kooyman, Barbara Wienecke, Norman Ratcliffe, Adrian J Fox, Andrew H Fleming, Claire Porter, Phil N Trathan
Publicado 2012