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"Pigeon" and "Dove" redirect here. For other uses, see Pigeon (disambiguation) and Dove (disambiguation).

Columbidae
Temporal range: Early Miocene – recent[1]
Pink-necked green pigeon
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Columbimorphae
Order: Columbiformes
Latham, 1790
Family: Columbidae
Leach, 1819
Type genus
Columba
Linnaeus, 1758
Subfamilies

See text

      Geographic range of the family

Columbidae (/kəˈlʌmbɪdiː/ kə-LUM-bih-dee) is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They primarily feed on plants, and can be taxonomically divided amongst granivores, that feed mostly on the ground on seeds, and frugivores, that feed mostly on fruits, from branches. The family occurs worldwide, often in close proximity with humans, but the greatest variety is in the Indomalayan and Australasian realms.

Columbidae contains 344 species divided into 50 genera. 59 species are listed as threatened, and 13 are extinct,[2] including the dodo, an island bird, and the passenger pigeon, whose flocks were once counted in the billions.

In colloquial English, the smaller species tend to be called "doves", and the larger ones "pigeons",[3] although the distinction is not consistent,[3] and there is no scientific separation between them.[4] Historically, the common names for these birds involve a great deal of variation. The bird most commonly referred to as "pigeon" is the domestic pigeon, or rock dove, which is common in many cities as the feral pigeon.

Doves and pigeons build relatively flimsy nests, often using sticks and other debris, which may be placed on branches of trees, on ledges, or on the ground, depending on species. They lay one or (usually) two white eggs at a time, and both parents care for the young. Unlike most birds, both sexes of doves and pigeons produce "crop milk" to feed to their young, secreted by a sloughing of fluid-filled cells from the lining of the crop.

Unfledged baby doves and pigeons are called squabs and are generally able to fly by five weeks of age. These fledglings, with their immature squeaking voices, are called squeakers once they are weaned,[5] and leave the nest after 25–32 days.

Since ancient times, many Columbidae species have developed intricate cultural and practical relations with humans. Doves were important symbols of the goddesses Innana, Asherah, and Aphrodite, and revered by the early Christian, Islamic and Jewish religions. Domestication of pigeons led to significant use of homing pigeons for communication, including war pigeons, such as the 32 pigeons who were awarded the Dickin Medal for "brave service" to their country, in World War II.

Etymology

Pigeon is a French word that derives from the Latin pīpiō, for a 'peeping' chick,[6] while dove is an ultimately Germanic word, possibly referring to the bird's diving flight.[7] The English dialectal word culver appears to derive from Latin columba.[6] A group of doves is called a "dule", taken from the French word deuil ('mourning').[8]

Origin and evolution

Columbiformes is one of the most diverse non-passerine clades of neoavians, and its origins are in the Cretaceous[9] and the result of a rapid diversification at the end of the K-Pg boundary.[10] Whole genome analyses have found the columbiformes form a sister clade of a group conformed by the sandgrouses (Pterocliformes) and mesites (Mesitornithiformes).[11][12]

Taxonomy and systematics

See also: List of Columbidae genera and List of Columbidae species

The name 'Columbidae' for the family was introduced by the English zoologist William Elford Leach in a guide to the contents of the British Museum published in 1819.[13][14] Columbidae is the only living family in the order Columbiformes. The sandgrouse (Pteroclidae) were formerly placed here, but were moved to a separate order, Pterocliformes, based on anatomical differences (such as the inability to drink by "sucking" or "pumping").[15]

The Columbidae are usually divided into five subfamilies, probably inaccurately.[16] For example, the American ground and quail doves (Geotrygon), which are usually placed in the Columbinae, seem to be two distinct subfamilies.[a] The order presented here follows Baptista et al. (1997),[17] with some updates.[18][19][20]

The arrangement of genera and naming of subfamilies is in some cases provisional because analyses of different DNA sequences yield results that differ, often radically, in the placement of certain (mainly Indo-Australian) genera.[citation needed] This ambiguity, probably caused by long branch attraction, seems to confirm the first pigeons evolved in the Australasian region, and that the "Treronidae" and allied forms (crowned and pheasant pigeons, for example) represent the earliest radiation of the group.[citation needed]

The family Columbidae previously also contained the family Raphidae, consisting of the extinct Rodrigues solitaire and the dodo.[20][21][22] These species are in all likelihood part of the Indo-Australian radiation that produced the three small subfamilies mentioned above,[23] with the fruit doves and pigeons (including the Nicobar pigeon). Therefore, they are here included as a subfamily Raphinae, pending better material evidence of their exact relationships.[24]

These taxonomic issues are exacerbated by columbids not being well represented in the fossil record,[25] with no truly primitive forms having been found to date.[citation needed] The genus Gerandia has been described from Early Miocene deposits in France, but while it was long believed to be a pigeon,[26] it is now considered a sandgrouse.[27] Fragmentary remains of a probably "ptilinopine" Early Miocene pigeon were found in the Bannockburn Formation of New Zealand and described as Rupephaps;[27] "Columbina" prattae from roughly contemporary deposits of Florida is nowadays tentatively separated in Arenicolumba, but its distinction from Columbina/Scardafella and related genera needs to be more firmly established (e.g. by cladistic analysis).[28] Apart from that, all other fossils belong to extant genera.[29]

Baby pigeon
Rock dove (Columba livia) in flight
Rock dove courtship
Rock doves in flight
A pigeon on roof top
A red-eyed dove on the Zambezi in Zimbabwe

List of genera

Fossil species of uncertain placement:

  • Genus †Arenicolumba Steadman, 2008
  • Genus †Rupephaps Worthy, Hand, Worthy, Tennyson, & Scofield, 2009 (St. Bathans pigeon, Miocene of New Zealand)

Subfamily Columbinae (typical pigeons and doves)

Subfamily Claravinae (American ground doves)

Subfamily Raphinae

Description

The common ground dove (Columbina passerina) is among the smallest species in the family.

Size and appearance

A wood pigeon perched in a plane tree
The common wood pigeon (Columba palumbus) is common throughout Europe.

Pigeons and doves exhibit considerable variation in size, ranging in length from 15 to 75 centimetres (5.9 to 29.5 in), and in weight from 30 g (0.066 lb) to above 2,000 g (4.4 lb).[30] The largest species is the crowned pigeon of New Guinea,[31] which is nearly turkey-sized, at a weight of 2–4 kg (4.4–8.8 lb).[32] The smallest is the common ground dove (Columbina passerina) of the genus Columbina, which is the same size as a house sparrow, weighing as little as 22 g (0.049 lb).[17] The dwarf fruit dove, which may measure as little as 13 cm (5.1 in), has a marginally smaller total length than any other species from this family.[17] One of the largest arboreal species, the Marquesan imperial pigeon, currently battles extinction.[33]

Anatomy and physiology

Overall, the anatomy of Columbidae is characterized by short legs, short bills with a fleshy cere, and small heads on large, compact bodies.[34] Like some other birds, the Columbidae have no gall bladders.[35] Some medieval naturalists concluded they have no bile (gall), which in the medieval theory of the four humours explained the allegedly sweet disposition of doves.[36] In fact, however, they do have bile (as Aristotle had earlier realized), which is secreted directly into the gut.[37]

A landing collared dove (Streptopelia decaocto) displays the contour and flight feathers of its wings.

The wings are large, and have eleven primary feathers;[38] pigeons have strong wing muscles (wing muscles comprise 31–44% of their body weight[39]) and are among the strongest fliers of all birds.[38]

In a series of experiments in 1975 by Dr. Mark B. Friedman, using doves, their characteristic head bobbing was shown to be due to their natural desire to keep their vision constant.[40] It was shown yet again in a 1978 experiment by Dr. Barrie J. Frost, in which pigeons were placed on treadmills; it was observed that they did not bob their heads, as their surroundings were constant.[41]

Feathers

Pigeon feather types, excluding down.

Columbidae have unique body feathers, with the shaft being generally broad, strong, and flattened, tapering to a fine point, abruptly.[38] In general, the aftershaft is absent; however, small ones on some tail and wing feathers may be present.[42] Body feathers have very dense, fluffy bases, are attached loosely into the skin, and drop out easily.[43] Possibly serving as a predator avoidance mechanism,[44] large numbers of feathers fall out in the attacker's mouth if the bird is snatched, facilitating the bird's escape. The plumage of the family is variable.[45]

Granivorous species tend to have dull plumage, with a few exceptions, whereas the frugivorous species have brightly coloured plumage.[17] The Ptilinopus (fruit doves) are some of the brightest coloured pigeons, with the three endemic species of Fiji and the Indian Ocean Alectroenas being the brightest. Pigeons and doves may be sexually monochromatic or dichromatic.[46] In addition to bright colours, pigeons may sport crests or other ornamentation.[47]

Flight

Animation of flying pigeons

Columbidae are excellent fliers due to the lift provided by their large wings, which results in low wing loading;[48] They are highly maneuverable in flight[49] and have a low aspect ratio due to the width of their wings, allowing for quick flight launches and ability to escape from predators, but at a high energy cost.[50]

Distribution and habitat

See also: List of Columbiformes by population
The zebra dove (Geopelia striata) has been widely introduced around the world.
Pigeons sitting next to an epymonous 'Birds Lane' street sign in an urban environment in Box Hill, Victoria, Australia.

Pigeons and doves are distributed everywhere on Earth, except for the driest areas of the Sahara Desert, Antarctica and its surrounding islands, and the high Arctic.[30] They have colonized most of the world's oceanic islands, reaching eastern Polynesia and the Chatham Islands in the Pacific, Mauritius, the Seychelles and Réunion in the Indian Ocean, and the Azores in the Atlantic Ocean.

The family has adapted to most of the habitats available on the planet. These species may be arboreal, terrestrial, or semi-terrestrial. Various species also inhabit savanna, grassland, desert, temperate woodland and forest, mangrove forest, and even the barren sands and gravels of atolls.[51]

Some species have large natural ranges. The eared dove ranges across the entirety of South America from Colombia to Tierra del Fuego,[52] the Eurasian collared dove has a massive (if discontinuous) distribution from Britain across Europe, the Middle East, India, Pakistan and China,[53] and the laughing dove across most of sub-Saharan Africa, as well as India, Pakistan, and the Middle East.[54]

The largest range of any species is that of the rock dove, also known as the common pigeon.[55] This species had a large natural distribution from Britain and Ireland to northern Africa, across Europe, Arabia, Central Asia, India, the Himalayas and up into China and Mongolia.[55] The range of the species increased dramatically upon domestication, as the species went feral in cities around the world.[55] The common pigeon is currently resident across most of North America, and has established itself in cities and urban areas in South America, sub-Saharan Africa, Southeast Asia, Japan, Australia, and New Zealand.[55]

As well as the rock dove, several other species of pigeon have become established outside of their natural range after escaping captivity, and other species have increased their natural ranges due to habitat changes caused by human activity.[17] A 2020 study found that the East Coast of the U.S. includes two pigeon genetic megacities, in New York and Boston, and observes that the birds do not mix together.[56]

Other species of Columbidae have tiny, restricted distributions, usually seen on small islands, such as the whistling dove, which is endemic to the tiny Kadavu Island in Fiji,[57] the Caroline ground dove, restricted to two islands, Truk and Pohnpei in the Caroline Islands,[58] and the Grenada dove, which is only found on the island of Grenada in the Caribbean.[59]

Some continental species also have tiny distributions, such as the black-banded fruit dove, which is restricted to a small area of the Arnhem Land of Australia,[60] the Somali pigeon, found only in a tiny area of northern Somalia,[61] and Moreno's ground dove, endemic to the area around Salta and Tucuman in northern Argentina.[17]

Behaviour

Feeding

White-bellied green pigeon (Treron sieboldii) feeding on fruit

Seeds and fruit form the major component of the diets of pigeons and doves, and [30][62] the family can be divided between the seed-eating, or granivorous, species (subfamily Columbinae) and the fruit-and-mast-eating, or frugivorous, species, which make up the other four subfamilies.[63]

The granivorous species typically feed on seed found on the ground, whereas the frugivorous species tend to feed in trees.[63] The morphological adaptations used to distinguish between the two groups include granivores tending to having thick walls in their gizzards, intestines, and esophagi, with the frugivores evolved with thin walls,[30] and the fruit-eating species have short intestines, as opposed to the seed eaters having longer intestines.[64] Frugivores are capable of clinging to branches and even hang upside down to reach fruit.[17][63]

In addition to fruit and seeds, a number of other food items are taken by many species. Some, particularly the ground doves and quail-doves, eat a large number of prey items such as insects and worms.[63] One species, the atoll fruit dove, is specialised in taking insect and reptile prey.[63] Snails, moths, and other insects are taken by white-crowned pigeons, orange fruit doves, and ruddy ground doves.[17]

Urban feral pigeons, descendants of domestic rock doves (Columbia Livia), reside in urban environments, disturbing their natural feeding habits. They depend on human activities and interactions to obtain food, causing them to forage for spilled food or food provided by humans.[65]

Status and conservation

The Socorro dove (Zenaida graysoni) is extinct in the wild

While many species of pigeons and doves have benefited from human activities and have increased their ranges, many other species have declined in numbers and some have become threatened or even succumbed to extinction.[66] Among the ten species to have become extinct since 1600 (the conventional date for estimating modern extinctions) are two of the most famous extinct species, the dodo and the passenger pigeon.[66]

The passenger pigeon was exceptional for a number of reasons. In modern times, it is the only pigeon species that was not an island species to have become extinct[66] even though it was once the most numerous species of bird on Earth.[citation needed] Its former numbers are difficult to estimate, but one ornithologist, Alexander Wilson, estimated one flock he observed contained over two billion birds.[67] The decline of the species was abrupt; in 1871, a breeding colony was estimated to contain over a hundred million birds, yet the last individual in the species was dead by 1914.[68] Although habitat loss was a contributing factor, the species is thought to have been massively over-hunted, being used as food for slaves and, later, the poor, in the United States throughout the 19th century.[citation needed]

The dodo, and its extinction, was more typical of the extinctions of pigeons in the past. Like many species that colonise remote islands with few predators, it lost much of its predator avoidance behaviour, along with its ability to fly.[69] The arrival of people, along with a suite of other introduced species such as rats, pigs, and cats, quickly spelled the end for this species and all the other island forms that have become extinct.[69]

Around 59 species of pigeons and doves are threatened with extinction today, about 19% of all species.[70] Most of these are tropical and live on islands. All of the species are threatened by introduced predators, habitat loss, hunting, or a combination of these factors.[69] In some cases, they may be extinct in the wild, as is the Socorro dove of Socorro Island, Mexico, last seen in the wild in 1972, driven to extinction by habitat loss and introduced feral cats.[71] In some areas, a lack of knowledge means the true status of a species is unknown; the Negros fruit dove has not been seen since 1953,[72] and may or may not be extinct, and the Polynesian ground dove is classified as critically endangered, as whether it survives or not on remote islands in the far west of the Pacific Ocean is unknown.[73]

Various conservation techniques are employed to prevent these extinctions, including laws and regulations to control hunting pressure, the establishment of protected areas to prevent further habitat loss, the establishment of captive populations for reintroduction back into the wild (ex situ conservation), and the translocation of individuals to suitable habitats to create additional populations.[69][74]

Military

Further information: War pigeon
Dickin Medal for the pigeon Royal Blue
Cher Ami was awarded the Croix de Guerre.

The pigeon was used in both World War I and World War II, notably by the Australian, French, German, American, and UK forces. They were also awarded for their service with various laurels throughout. On 2 December 1943, three pigeons – Winkie, Tyke, and White Vision, – serving with Britain's Royal Air Force, were awarded the first Dickin medal for rescuing an air force crew during World War II.[75] Thirty-two pigeons have been decorated with the Dickin Medal, citing their "brave service"[76] in war contributions, including Commando, G.I. Joe,[77] Paddy, Royal Blue, and William of Orange.[citation needed]

Cher Ami, a homing pigeon in World War I, was awarded the Croix de Guerre Medal, by France, with a palm Oak Leaf Cluster for his service in Verdun.[78] Despite having almost lost a leg and being shot in the chest, he managed to travel around 25 miles to deliver the message that saved 194 men of the Lost Battalion of the 77th Infantry Division in the Battle of the Argonne, in October 1918.[78][75] When Cher Ami died, he was mounted and is part of the permanent exhibit at the National Museum of American History of the Smithsonian Institution.[79]

A grand ceremony was held in Buckingham Palace to commemorate a platoon of pigeons that braved the battlefields of Normandy to deliver vital plans to Allied forces on the fringes of Germany.[80] Three of the actual birds that received the medals are on show in the London Military Museum[clarification needed] so that well-wishers can pay their respects.[80] In Brussels, there is a monument commemorating pigeons that served in World War I, the Monument au Pigeon-Soldat [fr].

Domestication

Emperor Honorius is a historically prominent individual who kept pigeons as pets.

The rock dove has been domesticated for hundreds of years.[81] It has been bred into several varieties kept by hobbyists, of which the best known is the homing pigeon or racing homer.[81] Other popular breeds are tumbling pigeons such as the Birmingham roller, and fancy varieties that are bred for certain physical characteristics such as large feathers on the feet or fan-shaped tails. Domesticated rock pigeons are also bred as carrier pigeons,[47] used for thousands of years to carry brief written messages,[82] and release doves used in ceremonies.[83] White doves are also used for entertainment and amusement, as they are capable of solving puzzles and performing intricate tricks.[84] A variant called the zurito, bred for its speed, may be used in live pigeon shooting.[85][86]

In religion

Early fifth-century BC statue of Aphrodite from Cyprus, showing her wearing a cylinder crown and holding a dove
God the Holy Spirit descending from heaven like a dove at the Baptism of Jesus, depicted by Almeida Júnior
See also: Doves as symbols

In ancient Mesopotamia, doves were prominent animal symbols of Inanna-Ishtar, the goddess of love, sexuality, and war.[87][88] Doves are shown on cultic objects associated with Inanna as early as the beginning of the third millennium BC.[87] Lead dove figurines were discovered in the temple of Ishtar at Aššur, dating to the thirteenth century BC,[87] and a painted fresco from Mari, Syria, shows a giant dove emerging from a palm tree in the temple of Ishtar,[88] indicating that the goddess herself was sometimes believed to take the form of a dove.[88] In the Epic of Gilgamesh, Utnapishtim releases a dove and a raven to find land; the dove merely circles and returns.[89] Only then does Utnapishtim send forth the raven, which does not return, and Utnapishtim concludes the raven has found land.[89]

In the ancient Levant, doves were used as symbols for the Canaanite mother goddess Asherah.[87][88][90] The ancient Greek word for "dove" was peristerá,[87][88] which may be derived from the Semitic phrase peraḥ Ištar, meaning "bird of Ishtar".[87] In classical antiquity, doves were sacred to the Greek goddess Aphrodite,[91][92][87][88] who absorbed this association with doves from Inanna-Ishtar.[88] Aphrodite frequently appears with doves in ancient Greek pottery.[91] The temple of Aphrodite Pandemos on the southwest slope of the Athenian Acropolis was decorated with relief sculptures of doves with knotted fillets in their beaks[91] and votive offerings of small, white, marble doves were discovered in the temple of Aphrodite at Daphni.[91] During Aphrodite's main festival, the Aphrodisia, her altars would be purified with the blood of a sacrificed dove.[93] Aphrodite's associations with doves influenced the Roman goddesses Venus and Fortuna, causing them to become associated with doves as well.[90]

Dove with an olive branch, Catacombs of Domitilla, Rome

In the Hebrew Bible, doves or young pigeons are acceptable burnt offerings for those who cannot afford a more expensive animal.[94] In Genesis, Noah sends a dove out of the ark, but it came back to him because the floodwaters had not receded. Seven days later, he sent it again and it came back with an olive branch in her mouth, indicating the waters had receded enough for an olive tree to grow. "Dove" is also a term of endearment in the Song of Songs and elsewhere. In Hebrew, Jonah (יוֹנָה) means dove.[95] The "sign of Jonas" in Matthew 16 is related to the "sign of the dove".[96]

Jesus's parents sacrificed doves on his behalf after his circumcision (Luke 2:24).[96] Later, the Holy Spirit descended upon Jesus at his baptism like a dove (Matthew), and subsequently the "peace dove" became a common Christian symbol of the Holy Spirit.[96]

In Islam, doves and the pigeon family in general are respected and favoured because they are believed to have assisted the final prophet of Islam, Muhammad, in distracting his enemies outside the cave of Thaw'r, in the great Hijra.[97] A pair of pigeons had built a nest and laid eggs at once, and a spider had woven cobwebs, which in the darkness of the night made the fugitives believe that Muhammad could not be in that cave.[97]

As food

See also: Squab (food)
Fried pigeon with nasi timbel (banana leaf wrapped rice), tempeh, tofu, and vegetables, Sundanese cuisine, Indonesia

Several species of pigeons and doves are used as food; however, all types are edible.[98] Domesticated or hunted pigeons have been used as a source of food since the times of the Ancient Middle East, Ancient Rome, and Medieval Europe.[76] It is a familiar meat in Jewish, Arab, and French cuisines. According to the Tanakh, doves are kosher, and they are the only birds that may be used for a korban. (Other kosher birds may be eaten, but not brought as a korban.) Pigeon is also used in Asian cuisines such as Chinese, Assamese, and Indonesian cuisines.

In Europe, the wood pigeon is commonly shot as a game bird,[99] while rock pigeons were originally domesticated as a food species, and many breeds were developed for the quality of their meat.[51] The extinction of the passenger pigeon in North America was at least partly due to shooting for use as food.[100] Mrs Beeton's Book of Household Management contains recipes for roast pigeon and pigeon pie, a popular, inexpensive food in Victorian industrial Britain.[101]

List of monuments depicting pigeons

There are many public monuments around the world devoted to and depicting pigeons.

Name Location Year dedicated Information Image
Passenger Pigeon Monument Wyalusing State Park, Wisconsin, USA 1948 The plaque on this conservationist statue's inscription reads: "DEDICATED TO THE LAST PASSENGER PIGEON Shot at Babcock, Sept. 1899. This Species Became Extinct Through the Avarice and Thoughtlessness of Man."[102] It honors the passenger pigeon, which had once perhaps been the most numerous bird on the planet before going extinct in 1914, largely due to unregulated hunting and habitat destruction committed by European settlers of North America.[103]
Monument voor de Oorlogsduif [nl] Brussels, Belgium 1931 This metal statue, designed by Georges Hano and sculpted by Victor Voets, honors the war pigeons who died in World War I.[104] Then-Brussels Mayor Adolphe Max[105] at the 1931 dedication ceremony of this statue said that carrier pigeons perhaps made the greatest and most painful contribution to the victory and liberation of Belgium during the First World War. The metal statue depicts a pigeon landing on a topless woman's outstretched arm.
Monument to Carrier Pigeons[106] Lille, France 1936 This stone monument depicts a woman flocked by birds, erected in honor of the approximately tens of thousands of birds who served as carrier pigeons or otherwise served the Triple Entente during World War I. The statue is in front of the Lille Zoo. It was erected by the édération Nationale des Sociétés Colombophiles (National Federation of Pigeon Societies).[107]
Hato Poppo monument Tokyo, Japan 1962 This is one of multiple statues dedicated to the beloved Japanese children's song, "Hato Poppo". The words of the song were written by Kume Higashi while watching children play with pigeons at the Buddhist Sensō-ji temple in Tokyo, near where this statue now is. A plaque on the monument includes the musical notation of the song. Atop the monument, five bronze pigeons are perched.[108]
Monument au Pigeon-Soldat [fr] Charleroi, Belgium 1951 A depiction of a bird with outstretched wings honors the pigeon soldiers of World War I.[109] The sculptor was Alphonse Darville [fr].
Passenger Pigeon Memorial Hut[110] Cincinnati Zoo and Botanical Garden, Ohio, USA A memorial specifically to Martha, the last known passenger pigeon who died at the Cincinnati Zoo in 1914, is housed in a Japanese pagoda-style building on zoo's grounds. Inside the building is artwork depicting the passenger pigeon. A bronze Martha is outside the memorial.[111]

See also

Notes

  1. ^ Conventional treatment saw two large subfamilies: one for the fruit doves, imperial pigeons, and fruit pigeons, and another for nearly all of the remaining species. Additionally, three monotypic subfamilies were noted, one each for the genera Goura, Otidiphaps, and Didunculus. The old subfamily Columbinae consisted of five distinct lineages, whereas the other four groups are more or less accurate representations of the evolutionary relationships.

References

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Further reading

Wikiquote has quotations related to Doves.
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Wikispecies has information related to Columbidae.
Look up Columbidae in Wiktionary, the free dictionary.
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