the.com/canary

a tiny yellow alarm system that paid for its keen lungs with its life

means A small, often bright-yellow finch kept as a songbird, famously once carried into mines to detect dangerous gases.

from Named for the Canary Islands, the bird's native home — and here's the twist: the islands weren't named for the bird. They come from the Latin Canariae Insulae, 'islands of dogs' (canis, dog), reportedly for the large dogs found there. So the cheerful little songbird is, by way of its homeland, etymologically a dog.

coal mines
Carried underground to detect deadly gases until 1986
wild color
Wild canaries are mostly drab green, not yellow
named after
Bird named for islands, islands named for dogs
male singers
Females rarely sing; males do the showing off
warrant canary
Tech firms use the phrase for secret surveillance alerts
for instance

canary islands — spanish archipelago off northwest africa, 7 main islands with 2.2 million residents

canary wharf — major financial district in london's docklands, opened 1991 with one canada square

roller canary — song canary breed developed in 17th century germany, prized for melodious rolling song

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