Bird migration is the regular seasonal movement, often north and south along a flyway, between breeding and wintering grounds. Many species of bird migrate. Migration carries high costs in predation and mortality, including from hunting by humans, and is driven primarily by availability of food. It occurs mainly in the northern hemisphere, where birds are funneled on to specific routes by natural barriers such as the Mediterranean Sea or the Caribbean Sea.
The mail pigeon is a variety of domestic pigeons derived from the wild rock dove, selectively bred for its ability to find its way home over extremely long distances. The rock dove has an innate homing ability, meaning that it will generally return to its nest using magnetoreception. Flights as long as 1,800 km have been recorded by birds in competitive pigeon racing. Their average flying speed over moderate 965 km distances is around 97 km/h and speeds of up to 160 km/h have been observed in top racers for short distances. In 2019 after sixty years a new world record was set in Netherlands for the fastest racing pigeon flight, distance flown 239 kilometers at speed above 143.262 kilometers per hour.
The swallows, martins, and saw-wings, or Hirundinidae, are a family of passerine birds found around the world on all continents, including occasionally in Antarctica. Highly adapted to aerial feeding, they have a distinctive appearance. The term "swallow" is used colloquially in Europe as a synonym for the barn swallow. Around 90 species of Hirundinidae are known, divided into 19 genera, with the greatest diversity found in Africa, which is also thought to be where they evolved as hole-nesters. They also occur on a number of oceanic islands. A number of European and North American species are long-distance migrants; by contrast, the West and South African swallows are nonmigratory.
Pigeon racing is the sport of releasing specially trained homing pigeons, which then return to their homes over a carefully measured distance. The time it takes the animal to cover the specified distance is measured and the bird's rate of travel is calculated and compared with all of the other pigeons in the race to determine which animal returned at the highest speed.
Pigeons have featured in numerous experiments in comparative psychology, including experiments concerned with animal cognition, and as a result there is considerable knowledge of pigeon intelligence.
New World orioles are a group of birds in the genus Icterus of the blackbird family. Unrelated to Old World orioles of the family Oriolidae, they are strikingly similar in size, diet, behavior, and strongly contrasting plumage, a good example of convergent evolution. As a result, the two have been given the same vernacular name.
Homing pigeons have long played an important role in war. Due to their homing ability, speed and altitude, they were often used as military messengers. Carrier pigeons of the Racing Homer breed were used to carry messages in World War I and World War II, and 32 such pigeons were presented with the Dickin Medal.
Magnetoreception is a sense which allows an organism to detect the Earth's magnetic field. Animals with this sense include arthropods, molluscs, and vertebrates. The sense is mainly used for orientation and navigation, but it may help some animals to form regional maps. Experiments on migratory birds suggest that they make use of a cryptochrome protein in the eye, relying on the quantum radical pair mechanism to perceive magnetic fields. This effect is extremely sensitive to weak magnetic fields, and readily disturbed by radio-frequency interference, unlike a conventional iron compass.
Shaping is a conditioning paradigm used primarily in the experimental analysis of behavior. The method used is differential reinforcement of successive approximations. It was introduced by B. F. Skinner with pigeons and extended to dogs, dolphins, humans and other species. In shaping, the form of an existing response is gradually changed across successive trials towards a desired target behavior by reinforcing exact segments of behavior. Skinner's explanation of shaping was this:
We first give the bird food when it turns slightly in the direction of the spot from any part of the cage. This increases the frequency of such behavior. We then withhold reinforcement until a slight movement is made toward the spot. This again alters the general distribution of behavior without producing a new unit. We continue by reinforcing positions successively closer to the spot, then by reinforcing only when the head is moved slightly forward, and finally only when the beak actually makes contact with the spot. ... The original probability of the response in its final form is very low; in some cases it may even be zero. In this way we can build complicated operants which would never appear in the repertoire of the organism otherwise. By reinforcing a series of successive approximations, we bring a rare response to a very high probability in a short time. ... The total act of turning toward the spot from any point in the box, walking toward it, raising the head, and striking the spot may seem to be a functionally coherent unit of behavior; but it is constructed by a continual process of differential reinforcement from undifferentiated behavior, just as the sculptor shapes his figure from a lump of clay.
The tippler is a breed of domestic pigeon bred to participate in endurance competitions. Flying results of up to 22 hours (non-stop) have been reported.
Pigeon post is the use of homing pigeons to carry messages. Pigeons are effective as messengers due to their natural homing abilities. The pigeons are transported to a destination in cages, where they are attached with messages, then the pigeon naturally flies back to its home where the recipient could read the message. They have been used in many places around the world. Pigeons have also been used to great effect in military situations, and are in this case referred to as war pigeons.
The domestic pigeon is a pigeon subspecies that was derived from the rock dove. The rock pigeon is the world's oldest domesticated bird. Mesopotamian cuneiform tablets mention the domestication of pigeons more than 5,000 years ago, as do Egyptian hieroglyphics. Research suggests that domestication of pigeons occurred as early as 10,000 years ago.
Pigeon photography is an aerial photography technique invented in 1907 by the German apothecary Julius Neubronner, who also used pigeons to deliver medications. A homing pigeon was fitted with an aluminium breast harness to which a lightweight time-delayed miniature camera could be attached. Neubronner's German patent application was initially rejected, but was granted in December 1908 after he produced authenticated photographs taken by his pigeons. He publicized the technique at the 1909 Dresden International Photographic Exhibition, and sold some images as postcards at the Frankfurt International Aviation Exhibition and at the 1910 and 1911 Paris Air Shows.
Olfactory navigation is a hypothesis put forward to explain navigation and homing of pigeons, in particular the homing pigeon.
William Tinsley Keeton was an American zoologist known internationally for his work on animal behavior, especially bird migration, and for his work on millipede taxonomy. He was a well-liked professor of biology at Cornell University in Ithaca, New York and author of a widely used introductory textbook, Biological Science.
Animal navigation is the ability of many animals to find their way accurately without maps or instruments. Birds such as the Arctic tern, insects such as the monarch butterfly and fish such as the salmon regularly migrate thousands of miles to and from their breeding grounds, and many other species navigate effectively over shorter distances.
Gustav Kramer was a German zoologist and ornithologist who specialised in allometry. He described Xenopus laevis, the African clawed frog, for the first time in his doctoral thesis. Near the end of the 1940s, he discovered that birds can use the sun as a compass.
Pigeoneer, or Pigeon Trainer was a rating in the United States Navy which emerged in the early twentieth century. Pigeoneers were charged with training pigeons to carry messages, as well as feeding and caring for the pigeons. The rating's necessity diminished with the emergence of radio communication; however, the rating remained in the United States Navy until 1961 to provide an emergency communication system. The rating was designated as a Specialist X
Edgar Gustav Franz Sauer, often rendered E.G. Franz Sauer, was a German ornithologist. He and his wife, Eleanor Sauer, experimented in the 1950s on warblers and how they orient at night. They kept warblers during Zugunruhe in circular cages with a glass bottom and watched the direction they pointed when they tried to fly. They discovered that on starry nights the birds attempted to go towards their appropriate migratory direction, but on cloudy nights they were less active and less precise. This led to the theory that the warblers were trying to migrate using the stars. They tested, and proved, this hypothesis using a homemade planetarium. When the stars in the planetarium disappeared, the birds were disoriented.
