For 10 points, name this aquatic bird found in Antarctica.
A β-defensin [beta-defensin] called Sphe-2 was recently isolated from a species of this organism, which uses the protein to preserve its stomach contents. That species, A. patagonicus, was studied in its main breeding area, the Crozet Archipelago, and these creatures perform extra-renal osmoregulation using a supraorbital gland, allowing them to drink salt water. Countershading is present to protect these animals from underwater predators such as leopard seals, and in one species the father performs all egg incubation duties. For 10 points, name this aquatic bird found in Antarctica.
A β-defensin [beta-defensin] called Sphe-2 was recently isolated from a species of this organism, which uses the protein to preserve its stomach contents.
{Penguin}