David Tipling / Chinstrap Penguins (Pygoscelis antarcticus) on blue iceberg, Antarctica

Mark Carwardine / Chinstrap Penguins (Pygoscelis antarcticus) standing on ice. South Shetland Islands, Antarctica, January. Book plate from Mark Carwardine's Ultimate Wildlife Experiences.

Bryan and Cherry Alexander / Chinstrap penguins (Pygoscelis antarcticus) and Snowy sheathbill (Chionis alba) on snowy rocks. Half Moon Island, South Shetland Islands, Antarctica, October.

Bryan and Cherry Alexander / Chinstrap penguins (Pygoscelis antarcticus) on snowy rocks. Half Moon Island, South Shetland Islands, Antarctica, October.

Nick Garbutt / Chin-strap Penguin (Pygoscelis antarcticus) displaying. Half-Moon Island, South Shetland Islands, Antarctica. February. (digitally stitched image)

Roy Mangersnes / Portrait of a Chinstrap Penguin (Pygoscelis antarcticus) in snowfall on Useful Island, Antarctica. November.

Konrad Wothe / Chinstrap Penguin (Pygoscelis antarctica) hopping over ice, South Sandwich Islands, Antarctica

Andy Rouse / Chinstrap penguin (Pygoscelis antarcticus) jumping out of water, Antarctic Peninsula (non-ex)

Edwin Giesbers / Silhouette of Chinstrap Penguin {Pygoscelis antarctica} calling at sunset, Antarctica

Edwin Giesbers / Chinstrap Penguin {Pygoscelis antarctica} face portrait, Antarctica

Edwin Giesbers / Two Chinstrap Penguins {Pygoscelis papua} beside water, Antarctica

Jan Vermeer / Chinstrap Penguin (Pygoscelis antarctica) pair courting, Southern Thule, South Sandwich Islands, Antarctica

Carol Walker / Chinstrap Penguin (Pygoscelis antarctica), adult sliding down ice. South Orkney Islands, Antarctica.

Carol Walker / Chinstrap Penguin (Pygoscelis antarctica), adult on ice, South Orkney Islands.

Chris Gomersall / Chinstrap penguin (Pygoscelis antarctica) on blue iceberg. South Orkney Isles, Antarctica.

Chris Gomersall / Chinstrap penguins (Pygoscelis antarctica) porpoising. Southern ocean off South Shetland Isles, Antarctica.

Chris Gomersall / Chinstrap penguin (Pygoscelis antarctica) on blue iceberg. South Orkney Isles, Antarctica.

Chris Gomersall / Chinstrap penguin (Pygoscelis antarctica) on blue iceberg. South Orkney Isles, Antarctica.

Kim Taylor / Chinstrap penguin {Pygoscelis antarctica} performing ecstatic display, Antarctica.

Todd Pusser / Leopard seal {Hydrurga leptony} beheading Chinstrap penguin, Antarctica.

Hanne Jens Eriksen / Chinstrap penguin portrait {Pygoscelis antarctica} South Georgia

Eric Dietrich / Chinstrap Penguin (Pygoscelis antarctica) group riding iceberg, Weddell Sea, Antarctica

Konrad Wothe / Chinstrap Penguin (Pygoscelis antarctica), Antarctica

Tui De Roy / Chinstrap Penguin (Pygoscelis antarctica) parents with chick, Paradise Bay, Antarctica Peninsula, Antarctica

Tui De Roy / Chinstrap Penguin (Pygoscelis antarctica) bowing over twin chicks Nelson Island, South Shetland Islands, Antarctica

Pete Oxford / Chinstrap penguin - ecstatic display {Pygoscelis antarctica} South Sandwich Is

Pete Oxford / Chinstrap penguins on iceberg, South Sandwich Is. off Saunders Is.

Pete Oxford / Chinstrap penguin portrait. Sandwich Islands.

Pete Oxford / Chinstrap penguin (Pygoscelis antarctica) in ice. South Sandwich Islands, Antarctica

David Tipling / Chinstrap penguins (Pygoscelis antarcticus) gathered around basalt rock formation in order to breed, Half Moon Island, Antarctica, November

David Tipling / Chinstrap Penguin (Pygoscelis antarctica) calling in courtship display, Half Moon Island, Antarctica

Jeff Vanuga / Chinstrap Penguin (Pygoscelis antarctica) portrait. Hydruga Rocks, Antarctica, November.

Mark Carwardine / Chinstrap penguin and tourists, Whalers Bay, Deception Is, South Shetland Is

Mark Carwardine / Chinstrap penguin feeding chick {Pygoscelis antarctica} Antarctica.

Mark Carwardine / Photographer with Chinstrap penguin {Pygoscelis antarctica} Antarctica.

Mark Carwardine / Weddell seal and Chinstrap penguins on shore, Antarctica.

Mark Carwardine / Chinstrap penguin {Pygoscelis antarctica} Antarctica.

Mark Carwardine / Chinstrap penguin colony {Pygoscelis antarctica} Antarctica.

Konrad Wothe / Chinstrap Penguin (Pygoscelis antarctica) pair with chicks, Antarctic Peninsula, Antarctica

Norbert Wu / Leopard Seal (Hydrurga leptonyx) with Chinstrap Penguin (Pygoscelis antarctica) prey, Palmer Station, Antarctic Peninsula, Antarctica

Kevin Schafer / Chinstrap Penguin (Pygoscelis antarctica) flapping snow off of itself while incubating egg after heavy snowfall, Antarctic Peninsula, Antarctica

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) rookery in late summer. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) chick being guarded by its parent. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) chick being guarded by its parent. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) calling from its nest at the rookery, closeup. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) calling from its nest at the rookery with flippers outstretched. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) calling from its nest at the rookery with flippers outstretched. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) chicks begging for food from its parent. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) chicks begging for food from its parent. Half Moon Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Gentoo Penguins (Pygoscelis papua) following each other into the sea from an iceberg. Errera Channel, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Small Chinstrap Penguin (Pygoscelis antarctica) calling from beneath its parent. Aitcho Island, South Shetland Islands, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) chick exercising its flippers, being guarded by its parent. Aitcho Island, South Shetland Islands, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) guarding two chicks. Aitcho Island, South Shetland Islands, Antarctica, January.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) pair greeting each other at the nest. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) calling from its nest at the rookery. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) looking at its hatching egg. Note hole where chick can be seen breaking through shell. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) with small chick begging for food. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) calling from its nest at the rookery. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) rookery at the early chick stage, cruise ship tourists in the distance. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) rookery at the early chick stage. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Group of Chinstrap Penguins (Pygoscelis antarctica) resting up on the face of a large iceberg. Drake Passage, near the South Shetland Islands, Antarctica, December.

Brent Stephenson / Huge iceberg with group of Chinstrap Penguins (Pygoscelis antarctica) close to the water. Drake Passage, near the South Shetland Islands, Antarctica, December.

Brent Stephenson / Chinstrap Penguin (Pygoscelis antarctica) with a small chick. Half Moon Island, Antarctic Peninsula, Antarctica, December.

Ole Jorgen Liodden / Chinstrap Penguin (Pygoscelis antarcticus) swimming at the surface. Antarctic Peninsula, November.

Ole Jorgen Liodden / Chinstrap Penguin (Pygoscelis antarcticus) 'toboganning' on its belly. Near stream, Antarctic Peninsula, November.

Doug Allan / Chinstrap Penguins (Pygoscelis antarcticus) on the slopes of active volcano. Zavodoski Island, South Sandwich Group, Antarctic. Freeze Frame book plate page 157.

Doug Allan / Colonies of Chinstrap and Macaroni Penguins (Eudyptes chrysolophus) on the slopes of active volcano, Zavadovski Island, South Sandwich group, Antarctica. Freeze frame book plate page 154.

Doug Allan / Chinstrip Penguins (Pygoscelis antarcticus) resting on an iceberg. Zavadovski Island, South Sandwich group, Antarctica. Freeze Frame book plate page 159.

Bryan and Cherry Alexander / Male Chinstrap penguins (Pygoscelis antarcticus) displaying on rocks. Half Moon Island, South Shetland Islands, Antarctica.

Bryan and Cherry Alexander / Chinstrap penguins (Pygoscelis antarcticus) on Baliza Hill, Half Moon Island, with Livingston Island beyond. South Shetland Islands, Antarctica.

Bryan and Cherry Alexander / Pair of Chinstrap penguins (Pygoscelis antarcticus) on their nest site, with icebergs drifting past. Half Moon Island, South Shetland Islands, Antarctica.

Troels Jacobsen/Arcticphoto / Chinstrap Penguins (Pygoscelis antarcticus) nest on raised domes where snow has thawed. Baily Head, Deception Island, South Shetland Islands, Antarctica, November 2009.

Troels Jacobsen/Arcticphoto / Rare leucistic Chinstrap Penguin (Pygoscelis antarcticus) resting on rocks. Point Wild, Elephant Island, The South Shetland Islands, Antarctica.

Troels Jacobsen/Arcticphoto / Leopard Seal (Hydrurga leptonyx) at the sea surface with a Chinstrap Penguin it has killed. Point Wild, Elephant Island, South Shetland Islands, Antarctica.

Charlie Summers / Chinstrap Penguin (Pygoscelis antarcticus) filthy from sliding down a snowbank that was covered in algae. South Orkney Islands, January

Flip Nicklin / Chinstrap Penguin (Pygoscelis antarctica) on beach near tourists, South Georgia Island

Nick Garbutt / Chin-strap Penguin (Pygoscelis antarcticus) standing with wings outstretched. Neko Bay, Antarctic Peninsula, Antarctica. February.

Tim Laman / Chinstrap penguin (Pygoscelis antarctica) head portrait, Antarctica, February

Tim Laman / Chinstrap penguin (Pygoscelis antarctica) portrait of chick, with barbed tongue visible. Antarctica, February

Tim Laman / Chinstrap penguin (Pygoscelis antarctica) calling, Antarctica, February

Tim Laman / Chinstrap penguin (Pygoscelis antarctica) Antarctica

Tim Laman / Chinstrap penguin (Pygoscelis antarctica) two families covered in red mineral mud from the earth, Antarctica, January

Tim Laman / Portrait of a Chinstrap penguin (Pygoscelis antarctica) adult calling, Antarctica, January

Tim Laman / Two Chinstrap penguins (Pygoscelis antarctica) portraits, Antarctica, January

Tim Laman / Chinstrap penguins (Pygoscelis antarctica) adult and chicks covered in red mineral mud from the earth, Antarctica, January

Tim Laman / Portrait of a Chinstrap penguin (Pygoscelis antarctica) on rocks, Antarctica, January

Suzi Eszterhas / Chinstrap Penguin (Pygoscelis antarctica) colony on beach, Bailey Head, Deception Island, Antarctica

Suzi Eszterhas / Chinstrap Penguin (Pygoscelis antarctica) colony on beach, Bailey Head, Deception Island, Antarctica

Konrad Wothe / Chinstrap Penguin (Pygoscelis antarctica) eating snow, Half Moon Island, Antarctica

Doug Allan / Chinstrap penguin (Pygoscelis antarcticus) rookery, Zavodovski Island, South Sandwich Group

Doug Allan / Leopard seal (Hydrurga leptonyx) with dead Chinstrap penguin (Pygoscelis antarcticus) near Port Lockroy, January

Roy Mangersnes / Chinstrap Penguin (Pygoscelis antarcticus) pair courting on Penguin Island, South Shetland Islands, Antarctica, November.

Roy Mangersnes / Chinstrap Penguin (Pygoscelis antarcticus) at rookery on Penguin Island, South Shetland Islands, Antarctica, November.

Roy Mangersnes / Chinstrap Penguin (Pygoscelis antarcticus) at rookery on Penguin Island, South Shetland Islands, Antarctica, November.

Roy Mangersnes / Chinstrap Penguin (Pygoscelis antarcticus) drinking on Penguin Island, South Shetland Islands, Antarctica, November.

Roy Mangersnes / Chinstrap Penguins (Pygoscelis antarcticus) collecting stones for nesting material on Penguin Island, South Shetland Islands, Antarctica, November.