Adult snowy sheathbill (Chionis albus), pair in front of the hut at Port Lockroy, Antarctica, Southern Ocean, Polar Regions

Adult snowy sheathbill (Chionis albus), courtship display on Barrientos Island, Aitcho Island Group, Antarctica, Polar Regions

Adult snowy sheathbills (Chionis albus), on ice near Joinville Island, Antarctica, Polar Regions

A Snowy Sheathbill, Chionis albus, in a King Penguin colony at Gold Harbour, South Georgia.

Snowy sheathbill (Chionis alba) on rock, Port Lockroy, Weinke Island, Antarctica, Southern Ocean

Snowy sheathbill (Chionis alba) in and around the Antarctic Peninsula. This bird is also known as the pale-faced sheathbill.

Adult pale-faced sheathbill (Chionis alba) near the Antarctic Peninsula

Detail of a melting iceberg (note the dripping icicles) grounded at Heroina Island in the Weddell Sea, Antarctica. Note the snowy sheathbill on top of the iceberg.