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Crow is one of several larger species of crow. These species do not form a single taxon within the genus.

There is no consistent difference between "crow" and "crow". These terms are mainly assigned to different species according to their size. Crows are usually smaller than crows.

The most common crows are common crows and thick billed crows.

The term "crow" originally refers to a common crow, a species of the genus crow, found in most parts of the northern hemisphere and more widely distributed than any other crow.

The modern English word Raven has synonyms in all other Germanic languages, including old northern European (later called modern Icelandic) hrafn and old German (H) Arabic, all of which originated in the original German * hrabanaz.

A group of collective terms for Crows (or at least common crows) includes "unfriendly," "betrayal," and "conspiracy.". In fact, most people use more generic "groups.".

Corvus corax, also known as northern crow, is a large all black passeriforme. Found throughout the northern hemisphere, it is the most widely distributed of all wolves. Although recent studies have shown significant genetic differences between populations from different regions, the appearance of at least eight subspecies has barely changed. It is one of the two largest curved birds, juxtaposed with the jackdaw, and probably the heaviest passeriforme. At maturity, the average crow is 63 centimeters (25 inches) long and weighs 1.2 kilograms (2.6 pounds). Common crows can live in the wild for up to 21 years, and only a few Australian species, such as the satin Archer and harpbird, live longer than the Passeriformes. Young pigeons may travel in droves, but later in life, each pair of mating males defends the territory.

Common crows have coexisted with humans for thousands of years, so many in some areas that they are regarded as pests. Part of their success as hybrids is due to their omnivorous diet. They have a wide range of uses and opportunities in the search for nutrients to feed on carrion, insects, grains, berries, fruits, small animals and food waste.

Some remarkable achievements in problem solving provide evidence that ordinary crows are very intelligent. For centuries, it has been the subject of mythology, folklore, art and literature. In many cultures, including Scandinavia, ancient Ireland and Wales, Bhutan, the northwest coast of North America, and the indigenous cultures of Siberia and Northeast Asia, the common crow is regarded as a spiritual figure or deity.

The mature common crow is 54 to 67 cm (21 to 26 inches) long and has a wingspan of 115 to 150 cm (45 to 51 inches). The recorded weight ranges from 0.69 to 2 kg (1.5 to 4.4 lbs), making the common crow one of the heaviest Passeriformes. Birds from colder areas such as the Himalayas and Greenland are usually larger, with slightly larger bills, while birds from warmer areas are smaller, with a smaller proportion of bills. The average weight from California is 784 grams (1.728 pounds), from Alaska is 1135 grams (2.502 pounds), and from Nova Scotia is 1230 grams (2.71 pounds). With a door length of 5.7 to 8.5 cm (2.2 to 3.3 inches), it is easy to become one of the largest banknotes in Passeriformes (perhaps only the banknotes of the Jackdaw are significantly larger), its tail is long and hard, with a gradual change of 20 to 26.3 cm (7.9 to 10.4 inches), and most of them are black iridescent feathers and brown irises. The throat feathers are elongated and sharp, and the base of the neck feathers is light brown gray. Legs and feet are of moderate size, with a frame length of 6 to 7.2 cm (2.4 to 2.8 inches). The feathers of the larvae are similar, but the iris is blue gray.

In addition to its larger size, the common crow is different from its cousin, the crow has a larger and heavier black beak, hairy feathers around the throat and above the beak, and a wedge-shaped tail. The difference between crows and crows lies in their tail shape, larger wing area and more stable takeoff style, usually requiring less wing flapping. Despite their size, crows can easily fly as fast as their little cousins. In flight, feathers creak, like the rustle of silk. The crow's voice is also very unique, its usual call is louder than the crow's call. In North America, C. cryptoleucus is very similar to the relatively small common crow in the southwest of the United States, and is famous for its relatively small bill, beard and body size, and relatively long tail. C. corone in Europe may show the characteristics of crows, because their beaks are large, but still significantly smaller, and they have the typical wing and tail shape of crows.

In the Faroe Islands, the species is now extinct and its color has been called "Raven.".

Crows are occasionally found in the wild. British Columbia birds lack the pink eyes of albinism, but idiots, in which case animals lack several different types of pigments, not just melanin.

Ornithologists are interested in the variety of sounds common crows make. Gwinner made important research in the early 1960s, recording and photographing his findings in detail. The species has recorded 15 to 30 vocal categories, most of which are used for social interaction. Recorded calls include alert calls, chase calls, and flight calls. This species has a unique, deep, resonant prruk prruk call, which for an experienced audience is different from any other Corvid. Its vocabulary is very extensive and complex, including high knock TOC TOC TOC, dry and harsh kraa, low snuffle rattle and some musical sounds.

Like other corvids, crows can mimic the sounds of their surroundings, including human voices. The non sound produced by common crows includes wing whistle and bill sound. Clapping or clicking is more often observed in women than in men. If a pair of members are lost, their spouse will reproduce their lost partner's phone number to encourage them to return.

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