Homing pigeon(Redirected from Carrier pigeon)
The homing pigeon is a variety of domestic pigeon (Columba livia domestica) derived from the rock pigeon, selectively bred for its ability to find its way home over extremely long distances. The wild rock pigeon has an innate homing ability, meaning that it will generally return to its nest, (it is believed) using magnetoreception. This made it relatively easy to breed from the birds that repeatedly found their way home over long distances. Flights as long as 1,800 km (1,100 miles) have been recorded by birds in competitive pigeon racing. Their average flying speed over moderate 640 km (400 miles) distances is around 80 km/h (50 miles per hour) but speeds of up to 140 km/h (90 miles per hour) have been observed in top racers for short[clarification needed] distances.
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Male and female pigeons (cocks and hens, respectively) can be differentiated by physical characteristics of the head, beak, height, and breast, though visual identification of sex by physical characteristics alone can be inaccurate. Males usually stand taller, and have larger beaks, crops, wattles, and eye ceres (fleshy growth around the eyes), as well as round heads and thicker napes. Females, on the other hand, tend to be shorter with smaller beaks, wattles, and ceres, as well as flatter heads and fuller breasts.
Male and female pigeons show different behaviours. The "coo" of males is louder and more insistent, especially when courting. Display behaviour also differs between the sexes. Most notably, a male often turns 360 degrees with an inflated crop and a loud "coo", to show interest in a female or to defend or discourage another pigeon from entering its territory (usually a nesting box), while females almost never turn full circle, but rather do a 270-degree back-and-forth rotational motion.
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During breeding season, usually during the warmer months, a male pigeon will court the female by puffing out his chest, bobbing his head and strutting in circles around her, all the while cooing his affections. If she accepts, she will allow him onto her back in order to copulate. After mating, the male will build a nest out of gathered sticks in a suitable crevice, while the female watches and makes changes. Urban birds will gladly use a roof on a building. The female will usually lay two eggs. The first egg would be laid late in the evening, and the other egg forty hours after, which will hatch in 17 to 20 days, depending on the weather. Both parents aid in rearing the nestlings. Fledglings usually leave the nest around four to five weeks after hatching.
The sport of flying homing pigeons was well-established as early as 3000 years ago. They were used to proclaim the winner of the Olympics. Messenger pigeons were used as early as 1150 in Baghdad and also later by Genghis Khan. By 1167 a regular service between Baghdad and Syria had been established by Sultan Nour-Eddin. In Damietta, by the mouth of the Nile, the Spanish traveller Pedro Tafur saw carrier pigeons for the first time, in 1436, though he imagined that the birds made round trips, out and back. The Republic of Genoa equipped their system of watch towers in the Mediterranean Sea with pigeon posts. Tipu Sultan used homing pigeons. They returned to the Jamia Masjid mosque in Srirangapatna, which was his headquarters. The pigeon holes may be seen in the mosque's minarets to this day.
In 1818, a great pigeon race called the Cannonball Run took place at Brussels. In 1860, Paul Reuter, who later founded Reuters press agency, used a fleet of over 45 pigeons to deliver news and stock prices between Brussels and Aachen, the terminus of early telegraph lines. The outcome of the Battle of Waterloo was also first delivered by a pigeon to England. During the Franco-Prussian War pigeons were used to carry mail between besieged Paris and the French unoccupied territory. In December 1870, it took ten hours for a pigeon carrying microfilms to fly from Perpignan to Bruxelles.
Historically, pigeons carried messages only one way, to their home. They had to be transported manually before another flight. However, by placing their food at one location and their home at another location, pigeons have been trained to fly back and forth up to twice a day reliably, covering round-trip flights up to 160 km (100 mi). Their reliability has lent itself to occasional use on mail routes, such as the Great Barrier Pigeongram Service established between the Auckland, New Zealand, suburb of Newton and Great Barrier Island in November 1897, possibly the first regular air mail service in the world. The world's first 'airmail' stamps were issued for the Great Barrier Pigeon-Gram Service from 1898 to 1908.
Homing pigeons were still employed in the 21st century by certain remote police departments in Odisha state in eastern India to provide emergency communication services following natural disasters. In March 2002, it was announced that India's Police Pigeon Service messenger system in Odisha was to be retired, due to the expanded use of the Internet. The Taliban banned the keeping or use of homing pigeons in Afghanistan.
To this day, pigeons are entered into competitions, with the winner receiving prize money at the end.
Research has been performed with the intention of discovering how pigeons, after being transported, can find their way back from distant places they have never visited before. Most researchers believe that homing ability is based on a "map and compass" model, with the compass feature allowing birds to orient and the map feature allowing birds to determine their location relative to a goal site (home loft). While the compass mechanism appears to rely on the sun, the map mechanism has been highly debated. Some researchers believe that the map mechanism relies on the ability of birds to detect the Earth's magnetic field. Birds can detect a magnetic field to help them find their way home. Scientists[who?] have found that on top of a pigeon's beak large number of iron particles are found which remain aligned to north like a man-made compass, thus it acts as compass which helps pigeon in determining its home. A light-mediated mechanism that involves the eyes and is lateralized has been examined somewhat, but developments have implicated the trigeminal nerve in magnetoception. Research by Floriano Papi (Italy, early 1970s) and more recent work, largely by Hans Wallraff, suggest that pigeons also orient themselves using the spatial distribution of atmospheric odors, known as olfactory navigation. Near their home lofts, in areas they have previously visited, pigeons probably are guided by visual landmarks.
Research by Jon Hagstrum of the US Geological Survey suggests that homing pigeons use low-frequency infrasound to navigate. Sound waves as low 0.1 Hz have been observed to disrupt or redirect pigeon navigation. The pigeon ear, being far too small to interpret such a long wave, directs pigeons to fly in a circle when first taking air, in order to mentally map such long infrasound waves.
Various experiments suggest that different breeds of homing pigeons rely on different cues to different extents. Charles Walcott at Cornell University was able to demonstrate that while pigeons from one loft were confused by a magnetic anomaly in the Earth it had no effect on birds from another loft 1.6 km (1 mile) away. Other experiments have shown that altering the perceived time of day with artificial lighting or using air conditioning to eliminate odors in the pigeons' home roost affected the pigeons' ability to return home.
Some research also indicates that homing pigeons navigate by following roads and other man-made features, making 90-degree turns and following habitual routes, much the same way that humans navigate.
As postal carriersEdit
When used as carrier pigeons in pigeon post a message is written on thin light paper and rolled into a small tube attached to the bird's leg. Pigeons can only go back to one "mentally marked" point that they have identified as their home, so "pigeon mail" can only work when the sender is actually holding the receiver's pigeons. White homing pigeons are used in dove-releasing ceremonies at weddings, funerals, and some sporting events.
With training, pigeons can carry up to 75 g (2.5 oz) on their backs. The German apothecary Julius Neubronner used carrier pigeons to deliver urgent medication. In 1977 a similar carrier pigeon service was set up for the transport of laboratory specimens between two English hospitals. Every morning a basket with pigeons was taken from Plymouth General Hospital to Devonport Hospital. The birds then delivered unbreakable vials back to Plymouth as needed. The 30 carrier pigeons became unnecessary in 1983 because of the closure of one of the hospitals. In the 1980s a similar system existed between two French hospitals located in Granville and Avranche.
Birds were used extensively during World War I. One homing pigeon, Cher Ami, was awarded the French Croix de guerre for her heroic service in delivering 12 important messages, despite having been very badly injured.
During World War II, the Irish Paddy, the American G.I. Joe and the English Mary of Exeter all received the Dickin Medal. They were among 32 pigeons to receive this award, for their gallantry and bravery in saving human lives with their actions. Eighty-two homing pigeons were dropped into the Netherlands with the First Airborne Division Signals as part of Operation Market Garden in World War II. The pigeons' loft was located in London, which would have required them to fly 390 km (240 miles) to deliver their messages. Also in World War II, hundreds of homing pigeons with the Confidential Pigeon Service were airdropped into northwest Europe to serve as intelligence vectors for local resistance agents. Birds played a vital part in the Invasion of Normandy as radios could not be used for fear of vital information being intercepted by the enemy.
The humorous IP over Avian Carriers (RFC 1149) is an Internet protocol for the transmission of messages via homing pigeon. Originally intended as an April Fools' Day RFC entry, this protocol was implemented and used, once, to transmit a message in Bergen, Norway, on April 28, 2001.
In September 2009, a South African IT company based in Durban pitted an 11-month-old bird armed with a data packed 4 GB memory stick against the ADSL service from the country's biggest internet service provider, Telkom. The pigeon, Winston, took an hour and eight minutes to carry the data 80 km (50 miles). In all, the data transfer took two hours, six minutes, and fifty-seven seconds—the same amount of time it took to transfer 4% of the data over the ADSL.
Homing pigeons have been reported to be used as a smuggling technique, getting objects and narcotics across borders and into prisons. For instance, between 2009 and 2015, many pigeons have been reported to carry cell phones, SIM cards, phone batteries and USB cords into prisons on the Brazilian state of São Paulo.
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This article lacks ISBNs for the books listed in it. (May 2013)
- Chico, the Story of a Homing Pigeon in the Great War, Lucy M Blanchard, Diggory Press, ISBN 978-1-84685-039-4
- Wringer by Jerry Spinelli
- A Pigeon and a Boy, by Meir Shalev (English translation by Evan Fallenberg), a historical novel about the use of pigeons by the Israel Defense Forces (and the Haganah before Israel was founded in 1948) in the defence of Israel when it was first founded, and in the defence of the Jewish community before Israeli independence
- Tegetmeier, William Bernhard (1871). The homing or carrier pigeon. London: George Routledge.
- "Nine Champions Create A Champion", Bob Kinney Silverado, The Thoroughbred, 15 May 1998
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- An informative magazine article written in the 1880s
- Pigeon and Business and Communication
- The three most important things that every pigeon fancier should know
- The great pigeon race disaster of 97 suggests an answer to an enduring mystery, George Johnson, "ON SCIENCE", St. Louis Post Dispatch
- The System of Military Dovecotes in Europe from an 1891 Scientific American article at Project Gutenberg
- RFC 1149 - A Standard for the Transmission of IP Datagrams on Avian Carriers
- Beginning pigeon site
- Resource for pigeon racers
- Round Trip War Birds, Popular Science, November 1941, article on US Army Signal Corps use of homing pigeons with first high-speed photos showing how a pigeon flies
- Barnhart & Son Lofts, long-time breeder, exhibitor, and judge of fancy and racing pigeons
- Fragment 'Those waiting for the birds' (2008, Eve Duchemin), documentary about Belgian homing pigeons
- Miller, James Nevin (February 1930). "The Passing of the Carrier Pigeon". Popular Mechanics: 194–197.
- Reuters (2 November 2012). "WWII carrier pigeon remains found in UK chimney".