A Mantled Howler Monkey (Alouatta palliata), known for it's call, eating leaves in tree; Nosara, Guanacaste Province, Costa Rica, Central America

Old fashioned Telephone (Telefone) box kiosk in street of traditional Portuguese village, Cacela Velha, Algarve, Portugal, Europe

African skimmers (Rynchops flavirostris) displaying, Chobe National Park, Botswana, Africa

Meal call in Zen temple, Larzac, Dordogne, France, Europe

Bell call, Klosterneuburg, Austria, Europe

Family of five on scooter, wife holding mobile phone for husband to take call, Udaipur, Rajasthan, India, Asia

Historic buildings in King's Square, St George, Bermuda, a UNESCO World Heritage site dating back to the 17th Century. Cruise liners call there so passengers can experience the oldest continuously occupied British settlement in the New World.

Female mantled howler monkey (Alouatta palliata) eating in Pacific coast forest. Known for their loud call. Esperanza, Nosara, Guanacaste, Costa Rica.

Female mantled howler monkey (Alouatta palliata) eating in Pacific coast forest. Known for their loud call. Esperanza, Nosara, Guanacaste, Costa Rica.

Juvenile mantled howler monkey (Alouatta palliata) in Pacific coast forest. Known for their loud call. Esperanza, Nosara, Guanacaste, Costa Rica.

Juvenile mantled howler monkey (Alouatta palliata) in Pacific coast forest. Known for their loud call. Esperanza, Nosara, Guanacaste, Costa Rica.

Magellanic penguin (Spheniscus magellanicus) calling, giving a warning call, Patagonia, Chile, South America

Yellow-footed gull (Larus livens), on its nest on Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America

Mourning Dove (Zenaida macroura),a member of the dove family, Columbidae, named after its mournful call, Bermuda, North Atlantic, North America

Mundari boy drumming to call back the cows, Mundari tribe, South Sudan, Africa

Mundari man drumming to call back the cows, Mundari tribe, South Sudan, Africa

Mantled Howler Monkey (Alouatta palliata), named for its call, eating leaves in tree, Nosara, Guanacaste Province, Costa Rica, Central America

A young Thai woman making a phone call on her cell phone, Thailand, Southeast Asia, Asia

Mantled Howler Monkey (Alouatta palliata), named for its call, eating leaves in tree, Nosara, Guanacaste Province, Costa Rica, Central America

Magellanic penguin (Spheniscus magellanicus) calling, giving a warning call, Patagonia, Chile, South America

Morning Call Sculpture, 9/11 memorial of an osprey on a perch made from beams from the World Trade Center, Greenport, Long Island, North Fork, New York, United States of America, North America

Mounties on horseback during roll call and instructions before performance of show number Musical Ride, at Regina, Saskatchewan, Canada, North America

A Chinese business woman making a telephone call at Beijing Capital Airport part of new Terminal 3 building opened February 2008, second largest building in the world, Beijing China, Asia

Race-goer wearing a hat with flowers in typical Ascot fashion at Royal Ascot Races. She is taking a call on her mobile cell phone.

A Chinese business woman making a telephone call at Beijing Capital Airport part of new Terminal 3 building opened February 2008, second largest building in the world, Beijing China, Asia

Elephant seal on the beach giving warning call, at Sea Lion Island in The Falkland Isles

Automated call centre, Vcustomer company, Delhi, India, Asia

Automated call centre, Vcustomer company, Delhi, India, Asia

Old British telephone call box at the cruise terminal in the Royal Naval Dockyard, Bermuda, Central America

Prayer call, Ganagobie Monastery church, Ganagobie, Alpes de Haute Provence, France, Europe

Seville - Spain - The Feria de Abril - Seville Fair - A girl in traditional costume making a call on her mobile phone

European wolf, canis lupus lupus, adult male howling, in winter, national park bayrischer wald, germany, captiv

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

The Round Tower, 27m tall, used as belfry to call monks to prayer and to summon travellers at Devenish, a monastic settlement with a history from the 6th to the 16th century, Devenish Island, Lough (lake) Erne, Enniskillen, County Fermanagh, Ulster, Northern Ireland, United Kingdom, Europe

The Round Tower, 27m tall, used as belfry to call monks to prayer and to summon travellers at Devenish, a monastic settlement with a history from the 6th to the 16th century, Devenish Island, Lough (lake) Erne, Enniskillen, County Fermanagh, Ulster, Northern Ireland, United Kingdom, Europe

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

European wolf, wolf, canis lupus lupus, adult, in winter, national park bayrischer wald, germany, captiv

Bonpo conch shell, t. Norbutse. young monks, wearing ceremonial hats, blow on conch shells to call monks to prayer. yellow cylindrical object behind them is a victory banner, symbolizing monasteries defeat of negativity evil intention on premises

A pair of Black Browed Albatross (Thalassarche melanophris) Allopreening to reinforce the pair bond in a nesting colony on Westpoint island in the Falkland Islands off argentina, in South America. Albatrosses are globally thratened by long line fishing boats who are responsible for killing thousands of birds.

In month of november before full moon a sacred ceremony is held in various monasteries throughout himalayas by traditional healers known as amchis. They call down spiritual deities to bless medicine. Amchis making torma, a ritual food offering. India

In month of november before full moon a sacred ceremony is held in various monasteries throughout himalayas by traditional healers known as amchis. They call down spiritual deities to bless medicine. Amchis making torma, a ritual food offering. India

Australia. Young man making phone call, aborigine community of , or beswick, arnemland, northern territory. 2007

Alpine Marmot, Marmota marmota

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

The Round Tower, 27m tall, used as belfry to call monks to prayer and to summon travellers at Devenish, a monastic settlement with a history from the 6th to the 16th century, Devenish Island, Lough (lake) Erne, Enniskillen, County Fermanagh, Ulster, Northern Ireland, United Kingdom, Europe

In month of november before full moon a sacred ceremony is held in various monasteries throughout himalayas by traditional healers known as amchis. They call down spiritual deities to bless medicine. Amchis performing puja at potenization ceremony. Amchis performing rituals during potenization ceremony. India

Buff-necked ibis (theristicus caudatus) adult calling, rupununi, guyana

The Round Tower, 27m tall, used as belfry to call monks to prayer and to summon travellers at Devenish, a monastic settlement with a history from the 6th to the 16th century, Devenish Island, Lough (lake) Erne, Enniskillen, County Fermanagh, Ulster, Northern Ireland, United Kingdom, Europe

A Light Mantled Albatross, or Light Mantled Sooty Albatross, Phoebetria palpebrata, on South Georgia, on nesting cliffs at Grytviken, calling to its mate.

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Chinstrap penguin (Pygoscelis antarctica) chick head detail at colony on Useful Island near the Antarctic Peninsula. There are an estimated 2 million breeding pairs of chinstrap penguins in the Antarctic peninsula region alone, perhaps as many as 7.5 million breeding pairs in all of Antarctica. Their name derives from the narrow black band under their heads which makes it appear as if they are wearing black helmets, making them one of the most easily identified types of penguin. Other names for them are "Ringed Penguins", "Bearded Penguins", and "Stonecracker Penguins" due to their harsh call. They grow to 68 cm (27 in). The average adult weight of a Chinstrap Penguin is 4.5 kg (10 lbs). Weight can range from 3 to 6 kg (6.6-13.2 lbs), with males being slightly larger and weight varying based on where the penguin is in the breeding cycle. Their diet consists of krill, shrimp, and fish. On land they build circular nests from stones, and lay two eggs, which are incubated by both the male and the female for shifts of five to ten days. They can also breed on icebergs, though they prefer non-icy conditions. The chicks hatch after about 35 days, and have fluffy gray backs and white fronts. The chicks stay in the nest for 20?30 days before they go to join a creche. At around 50?60 days old, they moult, gaining their adult plumage and go to sea. The Chinstrap Penguin was first described by German naturalist Forster in 1781. Its specific epithet was often seen as antarctica, however a 2002 review determined the genus Pygoscelis was masculine, and hence the correct binomial name is Pygoscelis antarcticus.

Eider duck (Somateria mollissima), male and female. Eider male and female interacting with each other in a winter raft. Demonstration of size difference between male and female.

Retro style Public telephone, with weather-worn telephone directories and a post-it note stuck to the inside. Roadside amenity in the Alaskan Interior. The Interior, Alaska, USA

Eider duck (Somateria mollissima), male. Male appearing to call someone. Actual behaviour is scratching and cleaning mouth with claw on webbed foot, while drifting with winter raft , Scotland, United Kingdom

Eider duck (Somateria mollissima), male and juvenile swimming past a fish farm, tend to raft there in the winter.

Red Deer (Cervus elaphus) hind barking warning call. Isle of Mull, Argyll, Scotland, UK

Eider duck (Somateria mollissima), male. Eider male peering out from in the middle of a winter raft. Various preening, calling and fighting in background.

Eider duck (Somateria mollissima), male in flight. The first few males arriving to a location which in minutes will become an Eider winter raft.

rock hyrax, procavia capensis, making alarm call, middle east

Rockhopper Penguin (Eudyptes chrysocome) at Devil's Nose on New Island in the Falkland Islands, South Atlantic Ocean.

Greylag Goose (Anser anser) flying over field just after taking of. Calling. Slow shutter speed. Argyll, Scotland, UK

Eider duck (Somateria mollissima), male and female. Raft takes flight as it nears a moored boat.

Eider duck (Somateria mollissima), male. Calling while seperated from a winter raft.

Eider duck (Somateria mollissima), male and female. Eider rafting in the winter as the sun sets

Curlew (Numenius arquata) flying and calling, snowy hills in background. Argyll, Scotland, UK

White / Fairy tern (Gygis alba) resting on branch. Bird Island, Seychelles, Indian Ocean (RR)

Adult Chinstrap penguin (Pygoscelis antarctica) braying in a huge colony at Baily Head on Deception Island in Bransfield Strait off the Antarctic Peninsula.

Adult gentoo penguin (Pygoscelis papua) calling out in the Aitcho Island Group, South Shetland Islands, Antarctica.

Hiker woman with a dog and a mobile phone in a path in a beechwood. Aitzkorri-Aratz Natural Park. Alava, Basque Country, Spain, Europe.

Portrait of a young beautiful caucasian woman in her 20s lying on the grass and talking on her mobile phone in a garden. Lifestyle concept.

Local people in the narrow strees of the city town of Lamu island in Kenya

Emergency call services allow seniors living alone to alert a call center, thanks to a call button connected to the telephone

Emergency call services allow seniors living alone to alert a call center, thanks to a call button connected to the telephone

Emergency call services allow seniors living alone to alert a call center, thanks to a call button connected to the telephone

Emergency call system

Emergency call services allow seniors living alone to alert a call center, thanks to a call button connected to the telephone

Emergency call system

Emergency call system

Nurse Call Button

Siamang, (Symphalangus syndactylus), adult calling, captive, Southeast Asia

Siamang, (Symphalangus syndactylus), adult calling on tree, Southeast Asia, Asia

Buddhist Shaolin monk striking a wooden gong, Call for prayer, Shaolin Monastery, known for Shaolin boxing, Taoist Buddhist mountain, Song Shan, Henan province, China

Woman with mobile phone taking a phone call on the beach, South Beach, Miami, Florida, USA

mobile phone sales, the big numbers cost more money, sales store, sales women

Snowy Owls (Nyctea scandiaca), two fledglings callingtdoors, outside, ornithology, zoology, color, colour

Toco Toucan (Ramphastos toco), adult, on tree, Pantanal, Brazil, South America

Northern White-cheeked Gibbon (Hylobates leucogenys), female adult calling in tree, Asia

Snowy Owls (Nyctea scandiaca), three fledglings calling

Snowy Owl, Arctic Owl, Great White Owl, Harfang (Bubo scandiacus) (Nyctea scandiaca), calling

Siamang (Symphalangus syndactylus, Hylobates syndactylus), calling female with young, native of Asia, in captivity, Czech Republic, Europe

Young woman on an inner tube, floating tyre, talking on a mobile phone in a private swimming pool, Germany

Cougar or Puma (Puma concolor, Felis concolor), adult, with mouth open, snow, Montana, USA

Bald eagle (Haliaeetus leucocephalus), immature, calling, found in North America, captive, Germany, Europe

Siamang (Symphalangus syndactylus, Hylobates syndactylus), male calling, native of Asia, in captivity, Czech Republic, Europe

Great Gray Owl (Strix nebulosa), adult, portrait, calling, Germany, Europe

Snowy Owls (Nyctea scandiaca), three fledglings calling

Qatari on a cell phone, in traditional clothing with gutra, Emirate of Qatar, Persian Gulf, Middle East, Asia

Solar cell or panel on a taxi call box, Munich, Bavaria, Germany

Red phone booth, telephone box and mailbox in Pembrokeshire, Wales, Great Britain, Europe

Carnival, Rose Monday parade in Koblenz, Rhineland-Palatinate, Germany, Europe