The great-tailed grackle or Mexican grackle (''Quiscalus mexicanus'') is a medium-sized, highly social

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped') which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their ...

bird native to

North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography. Etymology T ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

. A member of the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Icterid Icterids () or New World blackbirds make up a family, the Icteridae (), of small to medium-sized, often colorful, New World passerine birds. The family contains 108 species and is divided into 30 genera. Most species have black as a predominant ...

ae, it is one of 10

extant Extant or Least-concern species, least concern is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Exta ...

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

grackle Grackles is the common name of any of 11 species of passerine birds (10 extant and one extinct) native to North and South America. They belong to various genera in the icterid family. In all the species with this name, adult males have black o ...

and is closely related to the

boat-tailed grackle The boat-tailed grackle (''Quiscalus major'') is a passerine bird of the family Icteridae found as a permanent resident on the coasts of the Southeastern and Mid-Atlantic United States. Habitat The boat-tailed grackle is found in coastal saltw ...

and the extinct

slender-billed grackle The slender-billed grackle (''Quiscalus palustris'') is an extinct species of grackle in the Icteridae (New World blackbirds) family of birds. The species was closely related to the western clade of the great-tailed grackle, from which it diverge ...

. In the southern and

southwestern United States The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural list of regions of the United States, region of the United States that includes Arizona and New Mexico, along with adjacen ...

, the grackle is sometimes referred to simply as a "blackbird" or (erroneously) a "crow" due to its glossy black plumage; however, grackles form their own unique genus that is separate from other "blackbirds", such as the red-winged and Brewer's blackbirds, despite being in the same

(Icteridae). Superficially, Brewer's blackbird is one of the most visually similar species to grackles. In some parts of

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

, the grackle is sometimes referred to in

Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many countries in the Americas **Spanish cuisine **Spanish history **Spanish culture ...

as ("raven"; "crow"), although it is not a member of the crow genus (''

Corvus ''Corvus'' is a widely distributed genus of passerine birds ranging from medium-sized to large-sized in the family Corvidae. It includes species commonly known as crows, ravens, and rooks. The species commonly encountered in Europe are the car ...

'') nor of their family (

Corvidae Corvidae is a Cosmopolitan distribution, cosmopolitan Family (biology), family of Songbird, oscine passerine birds that contains the crows, ravens, Rook (bird), rooks, magpies, jackdaws, jays, treepies, choughs, and Nutcracker (bird), nutcrackers ...

Taxonomy

The great-tailed grackle was formally described in 1788 by the German naturalist

Johann Friedrich Gmelin Johann Friedrich Gmelin (8 August 1748 – 1 November 1804) was a German natural history, naturalist, chemist, botanist, entomologist, herpetologist, and malacologist. Education Johann Friedrich Gmelin was born as the eldest son of Philipp F ...

in his revised and expanded edition of

Carl Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

's ''

Systema Naturae ' (originally in Latin written ' with the Orthographic ligature, ligature æ) is one of the major works of the Sweden, Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the syste ...

''. He placed it with the crows in the

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

'' and coined the

binomial name In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, altho ...

''Corvus mexicanus''. The type locality has been restricted to the region of

Veracruz Veracruz, formally Veracruz de Ignacio de la Llave, officially the Free and Sovereign State of Veracruz de Ignacio de la Llave, is one of the 31 states which, along with Mexico City, comprise the 32 Political divisions of Mexico, Federal Entit ...

in Mexico. Gmelin's account was based on ''De Hocitzanatl'' that had been described by the Spanish naturalist

Francisco Hernández de Toledo Francisco Hernández de Toledo (c. 1515 – 28 January 1587) was a naturalist and court physician to Philip II of Spain. He was among the first wave of Spanish Renaissance physicians practicing according to the revived principles formulated by Hipp ...

in his work ''Rerum medicarum Novae Hispaniae thesaurus, seu, Plantarum animalium mineralium Mexicanorum historia''. The work was published in 1651, long after Hernández's death in 1587. "Hocitzanatl" was the name for the bird in a local Mexican language. The bird was also been mentioned in 1770 by the French author

Antoine-Joseph Pernety Antoine-Joseph Pernety, known as Dom Pernety (23 February 1716 – 16 October 1796), was a French writer. At various times he was a Benedictine and librarian of Frederic the Great of Prussia. Together with the Polish Count Tadeusz Grabianka, al ...

in his work . The great-tailed grackle is now one of six species placed in the genus ''

Quiscalus The Bird, avian genus ''Quiscalus'' contains seven of the 11 species of grackles, gregarious passerine birds in the icterid family. They are native to North America, North and South America. The genus was named and described by French ornitholog ...

'' that was introduced by Louis Vieillot in 1816. Eight

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

are recognised: * ''Q. m. nelsoni'' ( Ridgway, 1901) – southwest US and northwest Mexico * ''Q. m. graysoni'' Sclater, PL, 1884 – west Mexico * ''Q. m. obscurus''

Nelson Nelson may refer to: Arts and entertainment * ''Nelson'' (1918 film), a historical film directed by Maurice Elvey * ''Nelson'' (1926 film), a historical film directed by Walter Summers * ''Nelson'' (opera), an opera by Lennox Berkeley to a lib ...

, 1900 – southwest Mexico * ''Q. m. monsoni'' ( Phillips, AR, 1950) – central west US to central north Mexico * ''Q. m. prosopidicola'' ( Lowery, 1938) – central, central south US to northeast Mexico * ''Q. m. mexicanus'' ( Gmelin, JF, 1788) – central Mexico to Nicaragua * ''Q. m. loweryi'' (Dickerman & Phillips, AR, 1966) –

Yucatán Peninsula The Yucatán Peninsula ( , ; ) is a large peninsula in southeast Mexico and adjacent portions of Belize and Guatemala. The peninsula extends towards the northeast, separating the Gulf of Mexico to the north and west of the peninsula from the C ...

(southeast Mexico),

Belize Belize is a country on the north-eastern coast of Central America. It is bordered by Mexico to the north, the Caribbean Sea to the east, and Guatemala to the west and south. It also shares a maritime boundary with Honduras to the southeast. P ...

and nearby islands * ''Q. m. peruvianus'' Swainson, 1838 – Costa Rica to coastal north Peru and Venezuela

Description

Great-tailed grackles are medium-sized birds (larger than starlings and smaller than crows; with males weighing and females , and both sexes have long tails. Wingspan ranging . Males are iridescent black with a purple-blue sheen on the feathers of the head and upper body, while females are brown with darker wings and tail. Adults of both sexes have bright yellow eyes, while juveniles of both sexes have brown eyes and brown plumage like females (except for streaks on the breast). Great-tailed grackles, particularly the adult males, have a keel-shaped tail that they can fold vertically by aligning the two halves. The great-tailed grackle and boat-tailed grackle were considered the same species until genetic analyses distinguished them as two separate species.

Vocalizations

Great-tailed grackles have an unusually large repertoire of vocalizations that are used year-round. The sounds range from "sweet, tinkling notes" to a "rusty gate hinge". Males use a wider variety of vocalization types, while females engage mostly in "chatter", however there is a report of a female performing the "territorial song". Because of their loud vocalizations, great-tailed grackles are considered a pest species by some.

Distribution and habitat

Great-tailed grackles originated from the tropical lowlands of Central and South America, but historical evidence from

Bernardino de Sahagún Bernardino de Sahagún ( – 5 February 1590) was a Franciscan friar, missionary priest and pioneering ethnographer who participated in the Catholic evangelization of colonial New Spain (now Mexico). Born in Sahagún, Spain, in 1499, he jour ...

shows that the

Aztecs The Aztecs ( ) were a Mesoamerican civilization that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different ethnic groups of central Mexico, particularly those groups who spoke the ...

, during the time of the emperor

Ahuitzotl Ahuitzotl (, ) was the eighth Aztec ruler, the '' Huey Tlatoani'' of the city of Tenochtitlan, son of princess Atotoztli II. His name literally means "Water Thorny" and was also applied to the otter. It is also theorized that more likely, the ...

, introduced the great-tailed grackle from their homeland in the Mexican Gulf Coast to the Aztec capital of

Tenochtitlan , also known as Mexico-Tenochtitlan, was a large Mexican in what is now the historic center of Mexico City. The exact date of the founding of the city is unclear, but the date 13 March 1325 was chosen in 1925 to celebrate the 600th annivers ...

in the highland

Valley of Mexico The Valley of Mexico (; ), sometimes also called Basin of Mexico, is a highlands plateau in central Mexico. Surrounded by mountains and volcanoes, the Valley of Mexico was a centre for several pre-Columbian civilizations including Teotihuacan, ...

, most likely to use their

iridescent Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear gradually to change colour as the angle of view or the angle of illumination changes. Iridescence is caused by wave interference of light in microstruc ...

feathers for decoration. In more recent times, great-tailed grackles expanded their breeding range by over 5,500% by moving north into North America between 1880 and 2000, following urban and agricultural corridors. Their current range stretches from northwestern

Venezuela Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...

and western

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

and

Ecuador Ecuador, officially the Republic of Ecuador, is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. It also includes the Galápagos Province which contain ...

in the south to

Minnesota Minnesota ( ) is a U.S. state, state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the so ...

in the north, to

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

Idaho Idaho ( ) is a landlocked U.S. state, state in the Pacific Northwest and Mountain states, Mountain West subregions of the Western United States. It borders Montana and Wyoming to the east, Nevada and Utah to the south, and Washington (state), ...

, and

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

in the west, to Florida in the east, with vagrants occurring as far north as southern

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. Their habitat for foraging is on the ground in clear areas such as pastures, wetlands and mangroves, and chaparral. The grackles' range has expanded with agricultural and urban settings.

Behaviour and ecology

Behavior

Great-tailed grackles communally roost in trees or the reeds of wetlands at night and, during the breeding season, they nest in territories using three different mating strategies: 1) territorial males defend their territory on which many females place their nests and raise young, 2) residential males live in the larger colony but do not defend a territory or have mates, and 3) transient males stay for a few days before leaving the colony to likely move on to another colony. Resident and transient males sire a small number of offspring through extra-pair copulations with females on territories. Territorial males are heavier and have longer tails than non-territorial males, and both of these characteristics are associated with having more offspring. Great-tailed grackles can solve

The Crow and the Pitcher ''The Crow and the Pitcher'' is one of Aesop's Fables, numbered 390 in the Perry Index. It relates ancient observation of corvid behaviour that recent scientific studies have confirmed is goal-directed and indicative of causal knowledge rather ...

puzzle - a problem involving a tube that is partially filled with water and a floating, out-of-reach piece of food. The problem is solved by dropping objects into the water to raise the level and bring the food within reach. They are also behaviorally flexible, changing their preferences quickly in response to changes in cognitive tasks.

Breeding

The great-tailed grackle mating season usually begins in early or mid-April. The nest is typically built near the top of a large or medium-sized tree, using materials such as woven grass and twigs, as well as some man-made materials. Females usually lay around 4 to 7 eggs. Incubation is usually around 13 to 14 days and their young usually leave the nest 12 to 17 days after hatching; the parents continue to feed their young several weeks after they have left the nest until they reach maturity. Eggs are bright blue to pale bluish gray in color, marked with swirls and splotches that range from dark brown to black.

Food and feeding

Great-tailed grackles are noted for their diverse foraging habits. They extract larvae and insects from grassy areas; eat lizards, nestlings, and eggs; forage in freshly plowed land; remove parasites from cattle, and eat fruits (e.g., bananas, berries) and grains (e.g., maize, corn on the cob by opening the husks). They turn over objects to search for food underneath, including crustaceans, insects, and worms, they hunt tadpoles and fish by wading into shallow water, and although they do not swim, they catch fish by flying close to the water's surface, and are even reported to dive a few inches into the water to retrieve a fish. They are also known to pick dead insects off the license plates of parked cars, and kill

barn swallow The barn swallow (''Hirundo rustica'') is the most widespread species of swallow in the world, occurring on all continents, with vagrants reported even in Antarctica. It is a distinctive passerine bird with blue upperparts and a long, deeply f ...

s while flying.

In culture

In Mexico, where it is known as the ''chanate'' or ''zanate'', there is a legend that it has seven songs. "In the creation, the Zanate having no voice stole its seven distinct songs from the wise and knowing sea turtle. You can now hear the Zanate's vocals as the Seven Passions (Love, Hate, Fear, Courage, Joy, Sadness, and Anger) of life." Mexican artisans have created icons in clay, sometimes as whistles that portray the sea turtle with the zanate perched on its back. In Colombia, the species is called the ''maria mulata'', and is the official bird of

Cartagena, Colombia Cartagena ( ), known since the colonial era as Cartagena de Indias (), is a city and one of the major ports on the northern coast of Colombia in the Caribbean Coast Region, along the Caribbean Sea. Cartagena's past role as a link in the route ...

. The Cartagena artist Enrique Grau had an affinity for these birds and, because of this inspiration, many Colombian monuments and artistic works were created in honor of the bird's intelligence, adaptability, cheerfulness, sociability, collaborative tendencies, diligence, craftiness, and ability to take advantage of adversity. In

Austin, Texas Austin ( ) is the List of capitals in the United States, capital city of the U.S. state of Texas. It is the county seat and most populous city of Travis County, Texas, Travis County, with portions extending into Hays County, Texas, Hays and W ...

, it is commonly found congregating near the city's numerous food trucks, and grocery store parking lots. The great-tailed grackle has become an icon in the city, and especially on the campus of

The University of Texas The University of Texas at Austin (UT Austin, UT, or Texas) is a public university, public research university in Austin, Texas, United States. Founded in 1883, it is the flagship institution of the University of Texas System. With 53,082 stud ...

at Austin, to the extent that local radio station

KUT Kūt (), officially Al-Kut, also spelled Kutulamare, Kut al-Imara, or Kut Al Amara is a city in eastern Iraq, on the left bank of the Tigris River, about south east of Baghdad, and the capital of the Wasit Governorate. the estimated populatio ...

offers grackle-themed socks as a popular gift for its supporters.

References

External links

*
Great-tailed grackle - ''Quiscalus mexicanus''
- USGS Patuxent Bird Identification InfoCenter

-

Animal Diversity Web The Animal Diversity Web (ADW) is a non-profit group that hosts an online database site that collects natural history, classification, species characteristics, conservation biology, and distribution information on species of animals. The website ...

* *
Great-tailed grackle
at Birds of the World (Cornell Lab of Ornithology)
Great-tailed grackle movies
- Tree of Life
Great-tailed Grackle
-

Cornell Lab of Ornithology The Cornell Lab of Ornithology is a member-supported unit of Cornell University in Ithaca, New York, which studies birds and other wildlife. It is housed in the Imogene Powers Johnson Center for Birds and Biodiversity in Sapsucker Woods Sanctuar ...

Texas Monthly

Very diverse Great-tailed grackle sounds from Texas
{{Taxonbar, from=Q1234856

great-tailed grackle The great-tailed grackle or Mexican grackle (''Quiscalus mexicanus'') is a medium-sized, Social animal, highly social passerine bird native to North America, North and South America. A member of the Family (biology), family Icteridae, it is one o ...

Native birds of the Southwestern United States Birds of the Rio Grande valleys Native birds of the Plains-Midwest (United States) Birds of Central America Birds of Colombia Birds of Costa Rica Birds of Tumbes-Chocó-Magdalena