Canary

🌍 Overview

The domestic canary descends from the wild Atlantic canary, native to the Canary Islands, Azores, and Madeira, and has been selectively bred since the 16th century into distinct song and appearance varieties. Only males typically sing, a behavior tied to testosterone and daylight length, and centuries of selective breeding have produced dedicated song breeds like the Roller canary. Unlike most popular pet birds, canaries are kept primarily to be heard and watched rather than handled.

📋 Quick Facts

📜 History

The bird's second career was underground. After investigating an explosion at the Tylorstown Colliery in South Wales in 1896, the Scottish physiologist John Scott Haldane concluded that carbon monoxide had killed the miners, and he proposed carrying sentinel animals that would show the effects of the gas before a person did. A canary suited the job: a fast metabolism and a high breathing rate meant it collapsed while there was still time to get out. British pits carried them for most of the twentieth century. The government began planning an electronic replacement in 1981, and in December 1986 Britain formally ended the practice.

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