Michael Pitts / Hawaiian monk seal caught in fishing tackle off Kure Atoll, Pacific Ocean. The seal was subsequently freed and released by the photographer.

Francisco Marquez / Griffon vultures (Gyps fulvus) and European black vultures (Aegypius monachus) feeding on a dead deer, Cabaneros National Park, Montes de Toledo, Spain, May.

Kevin Schafer / Hawaiian Monk Seal (Monachus schauinslandi) male on beach, Poipu Beach, Kauai, Hawaii

Doug Perrine / Mediterranean monk seal (Monachus monachus) adult male swimming, Deserta Grande, Ilhas Desertas, Parque Natural da Madeira, Portugal, Atlantic Ocean, June. Critically endangered species

Gabriel Rojo / Monk parakeet (Myiopsitta monachus) Calden Forest , La Pampa , Argentina

Doug Perrine / Female Hawaiian monk seal (Monachus schauinslandi) defending her pup from two males, which are aggressive with each other, Molokai Island, Hawaii, USA.

Doug Perrine / Female Hawaiian monk seal (Monachus schauinslandi) fighting with a male trying to mate with her, Molokai Island, Hawaii, USA.

Doug Perrine / Hawaiian monk seals (Monachus schauinslandi) aggressive male attacks a five and a half week pup, mother (right) approaches to intervene; Papaloa Beach, Kalaupapa, Molokai, Hawaii, USA

Bernard Castelein / Cinereous / European Black Vulture (Aegypius monachus) in dispute with an Eurasian Griffon Vulture (Gyps fulvus), alongside a Himalayan Griffon (Gyps himalayensis) and Long-billed Vulture (Gyps indicu...

Aflo / ic-09002 Hawaiian monk seal swimming underwater {Mirounga angustirostris} Hawaii

Wild Wonders of Europe / Geslin / Monk parakeet (Myiopsitta monachus) pair perched in tree in the Vatican garden, Rome, Italy, March 2010

Wild Wonders of Europe / Geslin / Monk parakeet (Myiopsitta monachus) pair perched in tree in the Vatican garden, Rome, Italy, March 2010

Wild Wonders of Europe / Geslin / Monk parakeets (Myiopsitta monachus) at fountain in the Vatican garden, Rome, Italy

Wild Wonders of Europe / Sá / Mediterranean Monk Seal (Monachus monachus) large male of 2.5 m length. Localy identified by Parque Natural da Madeira as "Metade". Areias, Deserta Grande, Desertas Islands, Madeira, Portugal, August...

Wild Wonders of Europe / S‡ / Male Monk seal (Monachus monachus) portrait, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species. WWE INDOOR EXHIBITION

Wild Wonders of Europe / Varesvuo / European black vulture (Aegyptus monacha) amongst flowers, Extremadura, Spain, April 2009

Wild Wonders of Europe / Sá / Entrance to Monk seal (Monachus monachus) reproduction cave (Tabaceiro) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Monk Seal (Monachus monachus) juvenile female hunting, Areias, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Male Monk seal (Monachus monachus) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Mediterranean Monk Seal (Monachus monachus) juvenile female hunting on seabed, Areias, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Monk Seal (Monachus monachus) juvenile female hunting, Areias, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) pair mating, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) pair mating, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Coastal cliffs, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) pair mating, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Mediterranean Monk Seal (Monachus monachus) juvenile female hunting, Areias, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Large male Mediterranean Monk seal (Monachus monachus) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Mediterranean Monk Seal (Monachus monachus) juvenile female hunting, Areias, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Male Monk seal (Monachus monachus) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Furadinho cave, regularly visited by Monk seal (Monachus monachus) with view of Bugio Island, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Female Mediterranean Monk seal (Monachus monachus) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) juvenile male, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) pair courting on rocks on seabed, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Wild Wonders of Europe / Sá / Entrance to "Furna da gua" cave, regularly visited by Monk Seals (Monachus monachus) Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009

Wild Wonders of Europe / Sá / Mediterranean Monk seal (Monachus monachus) pair mating, Deserta Grande, Desertas Islands, Madeira, Portugal, August 2009, Critically endangered species

Bernard Castelein / Cinereous / European black vulture (Aegypius monachus) spreading wings on ground, Rajasthan, India

Michael Pitts / Hawaiian monk seal {Monachus schauinslandi} Pacific

Flip Nicklin / Hawaiian Monk Seal (Monachus schauinslandi) pair playing, Hawaii

Mitsuaki Iwago / Hawaiian Monk Seal (Monachus schauinslandi) portrait, Hawaii

Pete Oxford / Monk parakeet {Myiopsitta monachus} feeding on mango Pantanal, Brazil

Michael Pitts / Hawaiian monk seal pair courting off Midway Atoll,Pacific Ocean

Loic Poidevin / Hooded Vulture (Necrosyrtes monachus), Masai Mara, Kenya. March.

Staffan Widstrand / Young Black or Cinereous vulture (Aegypius monachus) Gredos Mountains, Castilla La Mancha, Spain

David Pattyn / Monk Saki (Pithecia monachus) captive with its owner, a boy from the Siona tribe, Cuyabeno wildlife reserve, Sucumbios, Amazon rainforest, Ecuador, July

Fabrice Cahez / Cinereous vulture (Aegypius monachus) in flight, Cevennes National Park, France, March.

Fabrice Cahez / Cinereous vulture (Aegypius monachus) in flight, Cevennes National Park, France, March.

Fabrice Cahez / Cinereous vulture (Aegypius monachus) in flight, Cevennes National Park, France, March.

Ann & Steve Toon / Hooded vulture (Necrosyrtes monachus) flying, Khwai conservancy, Botswana, August

David Fleetham / Hawaiian monk seals (Neomonachus schauinslandi) resting at water's edge. Kepuhi Beach, Kaluakoi, West End, Molokai, Hawaii.

David Tipling / Eurasian black vulture (Aegypius monachus) in aggressive posture approaching food and other vultures Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) in aggressive posture approaching food and other vultures Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) in aggressive posture approaching food and other vultures Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vultures (Aegypius monachus) fighting, Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) Sierra San Pedro, Extremadura, Spain. December

David Tipling / Eurasian black vulture (Aegypius monachus) Sierra San Pedro, Extremadura, Spain. December

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), two fighting over Pufferfish, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile feeding on Pufferfish, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), two standing on beach, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile feeding on Pufferfish, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile feeding on Pufferfish, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile standing on dolphin washed up on beach, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juveniles feeding on dolphin washed up on beach, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juveniles feeding on dolphin, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus) feeding on fish, Gambia.

Bernard Castelein / 1606430 - - Hooded vulture (Necrosyrtes monachus), juvenile in flight, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), two standing with fish, Gambia .

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile feeding. Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus) in flight, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), adult and juvenile fighting over fish, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile standing beside fish, Gambia.

Bernard Castelein / Hooded vulture (Necrosyrtes monachus), juvenile eating fish, Gambia.

Robin Chittenden / Mediterranean monk seal (Monachus monachus) group including mother and baby, Fuerteventura, Canary Islands, Spain. February.

David Fleetham / Tourists taking pictures of Hawaiian monk seals (Monachus schauinslandi) hauled out on roadside, Maui, Hawaii.

David Fleetham / Hawaiian monk seals (Monachus schauinslandi) hauled out resting on beach, Maui beach, Hawaii.

David Fleetham / Hawaiian monk seals (Monachus schauinslandi) on beach with Green sea turtle (Chelonia mydas) making it's way back to the ocean after egg laying,Ho'okipa Beach, Maui, Hawaii.

David Fleetham / Hawaiian monk seal (Monachus schauinslandi) hauled out on beach, with Green sea turtle (Chelonia mydas) and tourists and surfers in in the background Ho'okipa Beach off Maui, Hawaii.

David Fleetham / Hawaiian monk seals (Monachus schauinslandi) hauled out on beach with Green sea turtle (Chelonia mydas) returning to the sea, Maui, Hawaii.

David Fleetham / Underwater encounters with Hawaiian monk seals (Monachus schauinslandi) Hawaii

David Fleetham / Hawaiian monk seal (Monachus schauinslandi) swimming underwater. Hawaii.

David Fleetham / "Seal may bite" warning sign for Hawaiian monk seals (Monachus schauinslandi) on beach, Kauai, Hawaii.

David Fleetham / Hawaiian monk seal (Monachus schauinslandi) resting on sand in Kapalua Bay, Maui, Hawaii.

Winfried Wisniewski / Eurasian Black Vulture (Aegypius monachus) juvenile at feeding station, Extremadura, Spain

Winfried Wisniewski / Eurasian Black Vulture (Aegypius monachus) and Griffon Vulture (Gyps fulvus) fighting at feeding station, Extremadura, Spain

Nick Upton / Monk parakeet (Myiopsitta monachus) perched on a fence post on a seafront, Fuerteventura, Canary Islands, May.

Nick Upton / Monk parakeet (Myiopsitta monachus) eating peanuts in a tourist's hand, Fuerteventura, Canary Islands, May.

Nick Upton / Two Monk parakeets (Myiopsitta monachus) perched on a bush in coastal scrubland, Fuerteventura, Canary Islands, May.

Brais Seara Fernandez/ BIA / Eurasian Black Vulture (Aegypius monachus) calling, Castile-Leon, Spain

Denis-Huot / Lions (Panthera leo) leaving remains of carcass as Hyena (Crocuta crocuta) arrive to scavenge. With Hooded vulture (Necrosyrtes monachus) and Black backed jackals (Canis mesomelas) Masai-Mara game res...

Bernard Castelein / Cliff parakeets (Myiopsitta luchsi) perched on cactus, Red-fronted Macaw Community Nature Reserve, Omerque, Bolivia

Bernard Castelein / Cliff parakeets (Myiopsitta luchsi) perched on cactus, Red-fronted Macaw Community Nature Reserve, Omerque, Bolivia