A canary is a small songbird in the finch family that originates from the Macaronesian Islands, including the Canary Islands, Azores, and Madeira. The domestic canary is a domesticated form of the wild canary, and it is typically kept as a popular cage and aviary bird. Canaries come in a wide range of colors, from yellow to white, and they are known for their singing abilities. 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. In addition, the term "climate canary" is used to refer to a 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.