Domestic canary

The birds are named after Spain's Canary Islands, which derive their name from the Latin Insula Canaria (after one of the larger islands, Gran Canaria), meaning 'island of dogs', due to its "vast multitudes of dogs of very large size".^[8]

Domestic canaries are generally divided into three main groups:

• Colour-bred canaries (bred for their many colour mutations – Ino, Eumo, Satinette, Bronze, Ivory, Onyx, Mosaic, Brown, red factor, Green (Wild Type): darkest black and brown melanin shade in yellow ground birds, Yellow Melanin: mutation showing yellow ground colour with brown and black pigment, Yellow Lipochrome: mutation creating the loss of brown and black pigment, leaving yellow ground colour^[9] etc.)
• Type canaries (bred for their shape and conformation – Australian plainhead, Berner, Border, Fife, Gibber Italicus, Gloster, Lancashire, Raza Española, Yorkshire, etc.)
• Song canaries (bred for their unique and specific song patterns – Spanish Timbrado, German Roller (also known as Harz Roller), Waterslager (also known as "Malinois"), American Singer, Russian Singer, Persian Singer).

While wild canaries are a yellowish-green colour, domestic canaries have been selectively bred for a wide variety of colours, such as yellow, orange, brown, black, white, and red (the colour red was introduced to the domestic canary through hybridisation with the red siskin (Spinus cucullatus), a species of South American finch).^[10] Evidence of hybridization has also been found between the domestic canary (S. canaria domestica) and the black-chinned siskin (Spinus barbatus) in captivity.^[11]

Midway Atoll is home to a colony of feral yellow canaries, descended from pet birds introduced in 1909 by employees of the Commercial Pacific Cable Company.^[12] An estimated 500 canaries, which have retained their bright yellow plumage, are resident on Sand Island.^[13]

Canaries are judged in competitions following the annual molt in the summer.^[14] This means that in the Northern Hemisphere the show season generally begins in October or November and runs through December or January. Birds can only be shown by the persons who raised them. A show bird must have a unique band on its leg indicating the year of birth, the band number, and the club to which the breeder belongs. ^{[citation needed]}

There are many canary shows all over the world. The world show (C.O.M. - Confederation Ornithologique Mondiale) is held in Europe each year and attracts thousands of breeders. As many as 20,000 birds are brought together for this competition.^{[citation needed]}

Mice were used as sentinel species for use in detecting carbon monoxide in British coal mining from around 1896,^[15] after the idea had been suggested in 1895 by John Scott Haldane.^[16] Toxic gases such as carbon monoxide, asphyxiant gases such as carbon dioxide and explosive gases like methane^[17] in the mine would affect small warm-blooded animals before affecting the miners, since their respiratory exchange is more rapid than in humans. A mouse will be affected by carbon monoxide within a few minutes, while a human will have an interval of 20 times as long.^[18] Later, canaries were found to be more sensitive and a more effective indicator as they showed more visible signs of distress. Their use in mining is documented from around 1900.^[19] The birds were sometimes kept in carriers which had small oxygen bottles attached to revive them.^[20][21] The use of miners' canaries in British mines was phased out in 1986.^[22][23]

The phrase "canary in a coal mine" is frequently used to refer to a person or thing which serves as an early warning of a coming crisis. By analogy, the term "climate canary" is used to refer to a species (called an indicator species) that is affected by an environmental danger prior to other species, thus serving as an early warning system for the other species with regard to the danger.^[24]

Canaries have been extensively used in research to study neurogenesis, or the birth of new neurons in the adult brain, and also for basic research in order to understand how songbirds encode and produce song. Thus, canaries have served as model species for discovering how the vertebrate brain learns, consolidates memories, and recalls coordinated motor movements.

Fernando Nottebohm, a professor at the Rockefeller University in New York City, detailed the avian brain structures and pathways that are involved in the production of bird song.^[25][26]

Canaries are sometimes used to avoid hazardous human testing. Wasicky et al. 1949 used them in early testing of insect repellents. Human testing could only provide limited sample size and the inherent variance of the host ⇔ repellent ⇔ insect interaction is too high. Canaries, among other test animals, provided larger sample sizes cheaply.^[27]

In organized crime, the canary symbolizes an informant who "sings" to the police.^[28]

Canaries have been depicted in cartoons from the mid-20th century as being harassed by domestic cats; the most famous cartoon canary is Warner Bros.' "Tweety".

Norwich City, an English football team, is nicknamed "the Canaries" due to the city once being a famous centre for breeding and export of the birds. The club adopted the colours of yellow and green in homage. Jacob Mackley, of Norwich, won many prizes with birds of the local variety and shipped about 10,000 from Norwich to New York every year.^[29] A number of other sports teams worldwide use variations of the name "Canaries", such as Atlético Morelia (Mexico), Botev Plovdiv (Bulgaria), Frosinone (Italy), Koper (Slovenia), FC Novi Sad (Serbia), Fenerbahçe (Turkey), Lillestrøm SK (Norway), Kedah FA (Malaysia), IAPE (Maranhão, Brazil), the Brazil national football team and the Brazil women's national football team.

• Atlantic canary (wild canary)
• Australian plainhead
• Harz Roller
• Red factor canary
• Birdcage
• John Scott Haldane
• Warrant canary
• Sentinel species

• McDonald, Robirda, Brats in Feathers, Keeping Canaries ISBN 0-9730434-4-X
• Miley-Russell, Marie, The Practical Canary Handbook, A Guide to Breeding and Keeping Canaries. ISBN 1-59113-851-5. Especially useful to American Singer canary owners.
• Linda Hogan, Canary Tales
• GB Walker, Colour, Type, and Song Canaries
• David Alderton, Birds Care, You and your pet bird
• Author unknown, The Canary Handbook, Canaries, Barrons
• Tim Hawcroft, Health Care for Birds
• James Blake, Fife Canaries

• The Canary FAQ
• The Rockefeller University
• Canary Sound on YouTube