| Blue pigeon | |
|---|---|
 | |
| Seychelles blue pigeon | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Columbiformes |
| Family: | Columbidae |
| Subfamily: | Treroninae |
| Genus: | Alectroenas G.R. Gray, 1840 |
| Species | |
see text | |
The blue pigeons are a genus, Alectroenas, of birds in the dove and pigeon family Columbidae. They are native to islands in the western Indian Ocean.
The genus Alectroenas was first described in 1840 by the English zoologist George Robert Gray with the Mauritius blue pigeon (Alectroenas nitidissimus) as the type species. [1] [2] The genus name combines the Ancient Greek alektruōn, meaning "domestic cock", and oinas, meaning "pigeon". [3]
The Alectroenas blue pigeons are closely interrelated and occur widely throughout islands in the western Indian Ocean. They are allopatric and can therefore be regarded as a superspecies. [4] There are three extant species: the Madagascar blue pigeon, the Comoros blue pigeon, and the Seychelles blue pigeon. [5] The three Mascarene islands were home to one species each, which are all extinct; the Mauritius blue pigeon, the Rodrigues blue pigeon, and the Réunion blue pigeon. [6] The blue pigeons perhaps colonised the Mascarenes, the Seychelles or a now submerged hot spot island by "island hopping" and evolved into a distinct genus there before reaching Madagascar. [7] Their closest genetic relative is the cloven-feathered dove, Drepanoptila holosericea, of New Caledonia, which they separated from 8–9 million years ago. [8] Their ancestral group appears to be the fruit doves ( Ptilinopus ) of Southeast Asia and Oceania. [9]
The genus contains five extant or recently extinct species: [10]
Two species that became extinct in prehistoric times may have belonged to this genus:
The Rodrigues pigeon (Nesoenas rodericana), now extinct, was once assigned to the genus Alectroenas, but this is now believed to be erroneous. In reality, it probably belongs to an undescribed genus, as the sternum's shape is very dissimilar in its details to that of Alectroenas or Columba, and indeed to any other living genus of pigeons and doves. It is most similar to that of the Gallicolumba ground doves or to a miniature version of the sternum of a Ducula imperial pigeon.
The Réunion blue pigeon is known from the description of a slaty-blue feathered pigeon on Réunion, given by Dubois in 1674.
Dubois' description is as follows:
"...wild pigeons, everywhere full with them, some with slaty-coloured feathering, the others russet-red. They are a little larger than the European pigeons, and have larger bills, red at the end close to the head, the eyes ringed with the colour of fire, like pheasants. There is a season when they are so fat that one can no longer see their cloaca. They are very good tasting. Wood-pigeons and turtle-doves, as one sees in Europe and as good."
Dubois mentions "wild pigeons, everywhere full with them, some with slaty-coloured feathering" which likely refences the Réunion blue pigeon. [11] Since the Réunion blue pigeon was only mentioned by Dubois, little is known about its extinction. The Réunion blue pigeon likely survived after 1683 and maybe even until 1703. Jean Feuilley mentioned that all native pigeons were extinct in 1705. It is possible that invasive species such as cats and rats could have caused their extinction.
Compared to other pigeons, the blue pigeons are medium to large, stocky, and have comparatively long wings and tails. They all have distinct mobile hackles on the head and neck. The tibiotarsus is comparatively long and the tarsometatarsus is short. [12]
The dodo is an extinct flightless bird that was endemic to the island of Mauritius, which is east of Madagascar in the Indian Ocean. The dodo's closest relative was the also-extinct and flightless Rodrigues solitaire. The two formed the subfamily Raphinae, a clade of extinct flightless birds that were a part of the family which includes pigeons and doves. The closest living relative of the dodo is the Nicobar pigeon. A white dodo was once thought to have existed on the nearby island of Réunion, but it is now believed that this assumption was merely confusion based on the also-extinct Réunion ibis and paintings of white dodos.
Columbidae 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.
Newton's parakeet, also known as the Rodrigues parakeet or Rodrigues ring-necked parakeet, is an extinct species of parrot that was endemic to the Mascarene island of Rodrigues in the western Indian Ocean. Several of its features diverged from related species, indicating long-term isolation on Rodrigues and subsequent adaptation. The rose-ringed parakeet of the same genus is a close relative and probable ancestor. Newton's parakeet may itself have been ancestral to the endemic parakeets of nearby Mauritius and Réunion.
The Rodrigues solitaire is an extinct flightless bird that was endemic to the island of Rodrigues, east of Madagascar in the Indian Ocean. Genetically within the family of pigeons and doves, it was most closely related to the also extinct dodo of the nearby island Mauritius, the two forming the subfamily Raphinae. The Nicobar pigeon is their closest living genetic relative.
The Réunion ibis or Réunion sacred ibis is an extinct species of ibis that was endemic to the volcanic island of Réunion in the Indian Ocean. The first subfossil remains were found in 1974, and the ibis was first scientifically described in 1987. Its closest relatives are the Malagasy sacred ibis, the African sacred ibis, and the straw-necked ibis. Travellers' accounts from the 17th and 18th centuries described a white bird on Réunion that flew with difficulty and preferred solitude, which was subsequently referred to as the "Réunion solitaire".
This article is one of a series providing information about endemism among birds in the world's various zoogeographic zones. For an overview of this subject see Endemism in birds.
The Raphinae are a clade of extinct flightless birds formerly called didines or didine birds. They inhabited the Mascarene Islands of Mauritius and Rodrigues, but became extinct through hunting by humans and predation by introduced non-native mammals following human colonisation in the 17th century. Historically, many different groups have been named for both the dodo and the Rodrigues solitaire, not all grouping them together. Most recently, it is considered that the two birds can be classified in Columbidae, often under the subfamily Raphinae. The first person to suggest a close affinity to the doves was Johannes Theodor Reinhardt, whose opinions were then supported by Hugh Edwin Strickland and Alexander Gordon Melville.
The broad-billed parrot or raven parrot is a large extinct parrot in the family Psittaculidae. It was endemic to the Mascarene island of Mauritius. The species was first referred to as the "Indian raven" in Dutch ships' journals from 1598 onwards. Only a few brief contemporary descriptions and three depictions are known. It was first scientifically described from a subfossil mandible in 1866, but this was not linked to the old accounts until the rediscovery of a detailed 1601 sketch that matched both the subfossils and the accounts. It is unclear what other species it was most closely related to, but it has been classified as a member of the tribe Psittaculini, along with other Mascarene parrots. It had similarities with the Rodrigues parrot, and may have been closely related.
The Rodrigues rail, also known as Leguat's gelinote or Leguat's rail, is an extinct species of the rail family that was endemic to the Mascarene island of Rodrigues. The bird was first documented from life by two accounts from 1691–93 and 1725–26. Subfossil remains were later discovered and correlated with the old accounts in 1874, and the species was named E. leguati in Leguat's honour. It is generally kept in its own genus, Erythromachus, but has sometimes been assigned to the genus Aphanapteryx along with its close relative the red rail of Mauritius; their relationship with other rails is unclear.
The red rail is an extinct species of rail that was endemic to the Mascarene island of Mauritius, east of Madagascar in the Indian Ocean. It had a close relative on Rodrigues island, the likewise extinct Rodrigues rail, with which it is sometimes considered congeneric, but their relationship with other rails is unclear. Rails often evolve flightlessness when adapting to isolated islands, free of mammalian predators, and that was also the case for this species. The red rail was a little larger than a chicken and had reddish, hairlike plumage, with dark legs and a long, curved beak. The wings were small, and its legs were slender for a bird of its size. It was similar to the Rodrigues rail, but was larger, and had proportionally shorter wings. It has been compared to a kiwi or a limpkin in appearance and behaviour.
The Mauritius sheldgoose, also known as the Mauritius shelduck, is an extinct species of sheldgoose that was endemic to the island of Mauritius. While geese were mentioned by visitors to Mauritius in the 17th century, few details were provided by these accounts. In 1893, a carpometacarpus wing-bone and a pelvis from the Mare aux Songes swamp were used to name a new species of comb duck, Sarcidiornis mauritianus. These bones were connected to the contemporary accounts of geese and later determined to belong to a species related to the Egyptian goose and placed in the sheldgoose genus Alopochen. The Mauritius and Réunion sheldgoose may have descended from Egyptian geese that colonised the Mascarene islands.
The Réunion pink pigeon is an extinct subspecies of pigeon that formerly lived on the Mascarene island of Réunion. It is known from the description of a rusty-red pigeon given by Dubois in 1674 and a single subfossil humerus that agrees with that of the pink pigeon of Mauritius in generic characteristics, except being slightly longer. Also, Dubois' reference to the bill being red at the base and the eyes being surrounded by a red ring suggest that this species was closely allied to the Mauritius taxon. Dubois' description was as follows:
wild pigeons, everywhere full with them, some with slaty-coloured feathering [Alectroenas?], the others russet-red [N. duboisi]. They are a little larger than the European pigeons, and have larger bills, red at the end close to the head, the eyes ringed with the colour of fire, like pheasants. There is a season when they are so fat that one can no longer see their cloaca [croupion]. They are very good tasting. Wood-pigeons and turtle-doves, as one sees in Europe and as good.
The Rodrigues parrot or Leguat's parrot is an extinct species of parrot that was endemic to the Mascarene island of Rodrigues. The species is known from subfossil bones and from mentions in contemporary accounts. It is unclear to which other species it is most closely related, but it is classified as a member of the tribe Psittaculini, along with other Mascarene parrots. The Rodrigues parrot bore similarities to the broad-billed parrot of Mauritius, and may have been related. Two additional species have been assigned to its genus, based on descriptions of parrots from the other Mascarene islands, but their identities and validity have been debated.
The Réunion swamphen, also known as the Réunion gallinule or oiseau bleu, is a hypothetical extinct species of rail that was endemic to the Mascarene island of Réunion. While only known from 17th- and 18th-century accounts by visitors to the island, it was scientifically named in 1848, based on the 1674 account by Sieur Dubois. A considerable literature was subsequently devoted to its possible affinities, with current researchers agreeing it was derived from the swamphen genus Porphyrio. It has been considered mysterious and enigmatic due to the lack of any physical evidence of its existence.
The Mauritius blue pigeon is an extinct species of blue pigeon formerly endemic to the Mascarene island of Mauritius in the Indian Ocean east of Madagascar. It has two extinct relatives from the Mascarenes and three extant ones from other islands. It is the type species of the genus of blue pigeons, Alectroenas. It had white hackles around the head, neck and breast and blue plumage on the body, and it was red on the tail and the bare parts of the head. These colours were thought similar to those of the Dutch flag, a resemblance reflected in its French common name, Pigeon Hollandais. The juveniles may have been partially green. It was 30 cm (12 in) long and larger and more robust than any other blue pigeon species. It fed on fruits, nuts, and molluscs, and was once widespread in the forests of Mauritius.
The Seychelles blue pigeon, also known as the Seychelles blue fruit dove, is a medium-sized pigeon which inhabits woodland areas of the granitic Seychelles archipelago.
The Malagasy turtle dove or Madagascar turtle dove is a bird species in the pigeon and dove family, Columbidae. It is found in Mauritian-Indian Ocean Territory, the Comoros, Madagascar, Mauritius, Mayotte, Réunion, and the Seychelles.
The Mascarene grey parakeet, Mauritius grey parrot, or Thirioux's grey parrot, is an extinct species of parrot which was endemic to the Mascarene Islands of Mauritius and Réunion in the western Indian Ocean. It has been classified as a member of the tribe Psittaculini, along with other parrots from the Islands.
Julian Pender Hume is an English palaeontologist, artist and writer who lives in Wickham, Hampshire. He was born in Ashford, Kent, and grew up in Portsmouth, England.
The Mare aux Songes swamp is a lagerstätte located close to the sea in south eastern Mauritius. Many subfossils of recently extinct animals have accumulated in the swamp, which was once a lake, and some of the first subfossil remains of dodos were found there.
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