Asir magpie | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Corvidae |
Genus: | Pica |
Species: | P. asirensis |
Binomial name | |
Pica asirensis Bates, 1936 | |
The Asir magpie (Pica asirensis), also known as the Arabian magpie, is a highly endangered species of magpie endemic to Saudi Arabia. It is only found in the country's southwestern highlands, in the Asir Region. It occurs only in African juniper forest in well-vegetated wadis and valleys. It was formerly classified as a subspecies of the Eurasian magpie (Pica pica), and still is by many authorities. [2] This species is highly threatened by habitat destruction, as its native forests are not regenerating. Tourism development and climate change are also posing a threat. Only 135 pairs (270 mature individuals) are known to survive in the wild, and this number is declining. [1]
A molecular phylogenetic study published in 2018 found that the Asir magpie was a sister taxon to the black-rumped magpie that is found on the Tibetan Plateau. [3]
The Asir magpie (Pica asirensis) is about 45–60 cm (18–24 in) long, and its approximate weight is 240 g (8.5 oz). Its head, neck, back, front chest, and feet are all black. Its shoulders and belly are milk white. Its tail is black with bronze-green metallic luster. [4] Compared to the Eurasian magpie, the Asir magpie has longer bill, darker plumage, and darker iris. Its vocalization is distinct, and it also gives harsh high-pitched calls. [5] There is no large difference between males and females, but young Asir magpies are duller than adults.[ citation needed ]
During breeding seasons, the Asir magpies often group in pairs and live in flocks. Each of the flock approximately contains 8 birds. However, the Asir magpies travel in small groups of 3-5 birds for daily activities. In order to protect themselves from predators such as hawks and owls, they build their nests in forests and valleys with plentiful vegetation covered. [6]
Compared to flying, the Asir magpies prefer walking and hopping sideways. Since their size is small and their wings are short, they fly with fast wing beats, and they rarely glide.[ citation needed ]
The Asir magpie primarily lives above 2,150 m (7,050 ft) in thick shady juniper forests or dense mixed forests. It usually lives on south-facing slopes and avoids living on slopes larger than 30 degrees or near a human site. Sometimes, the Asir magpie is also observed foraging on roadsides or living at 1,800 m (5,900 ft) and higher. [7]
The Asir magpie is omnivorous. Its diet varies according to the changes in seasons and environments. When it is summer, the Asir magpie mainly feeds on animal-based food such as invertebrates, lizards, and frogs. During the other three seasons, it relies on the seeds and products of plants.[ citation needed ] The Asir magpie's food source is not limited, and it just eats the food which is available and abundant in the living environment. It even steals and eats the eggs of other birds, which gives the species the name "nest predators". [6]
As a highly endangered species, there are only 270 Asir magpie estimated to exist, and the extent of occurrence (breeding/resident) has shrunk to 42,700 km2 (16,500 sq mi). [2] When Bates (1936) first recorded the Asir magpie, the bird's living range extended from Tayif in the north to at least Abha in the south - a distance of 400 km (250 mi). [8] Today, the great majority of the population appears to be confined to pockets of mixed juniper and acacia forests within a 37 km (23 mi) strip of highlands, primarily between An-Namas and Billasmar. [9] A high degree of habitat fragmentation from tourism development and urban expansion poses a great threat to its existence by restraining the exchange of genetic materials between groups from different habitats. Moreover, the Asir magpies suffer from malnutrition as a result of feeding on human food wastes, which potentially leads to extinction of the species. [7]
Magpies are birds of various species of the family Corvidae. Like other members of their family, they are widely considered to be intelligent creatures. The Eurasian magpie, for instance, is thought to rank among the world's most intelligent creatures, and is one of the few nonmammalian species able to recognize itself in a mirror test. Magpies have shown the ability to make and use tools, imitate human speech, grieve, play games, and work in teams. They are particularly well known for their songs and were once popular as cagebirds. In addition to other members of the genus Pica, corvids considered magpies are in the genera Cissa, Urocissa, and Cyanopica.
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. In colloquial English, they are known as the crow family or corvids. Currently, 139 species are included in this family. The genus Corvus containing 50 species makes up over a third of the entire family. Corvids (ravens) are the largest passerines.
The yellow-billed magpie(Pica nuttalli), also known as the California magpie, is a large corvid that inhabits California's Central Valley and the adjacent chaparral foothills and mountains. Apart from its having a yellow bill and a yellow streak around the eye, it is virtually identical to the black-billed magpie (Pica hudsonia) found in much of the rest of North America. The scientific name commemorates the English naturalist Thomas Nuttall.
The black-billed magpie, also known as the American magpie, is a bird in the corvid family found in the western half of North America. It is black and white, with the wings and tail showing black areas and iridescent hints of blue and blue-green. It was once thought to be a subspecies of Pica pica, which was known as the black-billed magpie at the time, but was placed into its own species in 2000 based on genetic studies. Currently, Pica pica is the scientific name of the Eurasian magpie.
The Eurasian magpie or common magpie is a resident breeding bird throughout the northern part of the Eurasian continent. It is one of several birds in the crow family (corvids) designated magpies, and belongs to the Holarctic radiation of "monochrome" magpies. In Europe, "magpie" is used by English speakers as a synonym for the Eurasian magpie: the only other magpie in Europe is the Iberian magpie, which is limited to the Iberian Peninsula. Despite having a shared name and similar colouration, it is not closely related to the Australian Magpie.
The azure-winged magpie is a bird in the crow family. It is 31–35 cm long and similar in overall shape to the Eurasian magpie but is more slender with proportionately smaller legs and bill. It belongs to the genus Cyanopica.
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A flock is a gathering of individual birds to forage or travel collectively. Avian flocks are typically associated with migration. Flocking also offers foraging benefits and protection from predators, although flocking can have costs for individual members.
The Southwestern Arabian montane woodlands is a xeric woodland ecoregion in the southwestern Arabian Peninsula.
Communal roosting is an animal behavior where a group of individuals, typically of the same species, congregate in an area for a few hours based on an external signal and will return to the same site with the reappearance of the signal. Environmental signals are often responsible for this grouping, including nightfall, high tide, or rainfall. The distinction between communal roosting and cooperative breeding is the absence of chicks in communal roosts. While communal roosting is generally observed in birds, the behavior has also been seen in bats, primates, and insects. The size of these roosts can measure in the thousands to millions of individuals, especially among avian species.
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