One of the all-time greatest Q drops.
Read every word....
(media.greatawakening.win)
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dont they sing as a warning, and then, if not removed, they die when overcome by the gas
No, they die if there is bad air.
Birds sing in cages.
I bow to your knowledge of birds, its not my forte as you can tell ??
I was asking as well. I have always assumed they die but it makes sense they would chirp a bit first...
I have had to cede to r/yudsfpbc comment above, seems they know more than me. Sorry if it was misinformation. I should have looked this up first. Good article though explaining. https://www.smithsonianmag.com/smart-news/story-real-canary-coal-mine-180961570/
Used up until 1986... The last of them was retired in 1999.