What year did miners start using canaries?

How big is the largest owl in Pennsylvania? Are ravens intelligent birds? How do you know when bats are flying in the sky? What do hot pink flamingos eat? What is the fine for picking a pink and white lady slipper? What kind of omen is a bald eagle? What is the value of ducks unlimited framed print Vic's Pond? What is the best way to cook mature birds? Where was the film Wingless Bird set? How long should you quarantine a new parakeet... will a week or two be okay? What is reproduction of a grouse? What is the bone on top of a cassowary's head called? Is newpaper ink toxic to birds? Do Hawks Eagles and Owls ever eat carrion? What facts are there about swans? What is the spiritual meaning of woodpeckers? How does bird flu affect birds immune system? How much do amazon parrots cost? Which bird is called a lazy bird? What country does birds nest soup come from?