The existential threat to birds also affects humanity. As canaries in the Industrial Age warned of invisible death, birds of every shape and size can now be vital alerts in the age of global warming.
But if humanity can escape the proverbial coal mine on time and in any way Keep warming to the target of the Paris Agreement of 1.5 degrees Celsius, 76% of the most vulnerable species should survive, the Audubon Study.
He called for immediate action to slow down the warming of the planet to save birds and more 8] Interactive: See how our planet evolves over time
"It's a combination of changes in temperature, precipitation, and vegetation," says Brooke Bateman, Senior Climate Scientist at Audubon. "And the birds need to move and move to keep up with these changes, and in addition to the shifts in the area, we also have the pressure of changes in sea-level rise, urbanization, and extreme weather events that will affect them, no matter where they go . "
The National Audubon Society was founded in 1905 when the demand for feather hats almost killed Florida's waders. And thanks to the obsessive records of devout birdwatchers, Audubon scientists used a database of 140 million records to study birds in Mexico, the United States, and Canada.
Using the latest climate models from the Intergovernmental Panel on Climate Change, they studied the habitats of 604 North American species. Given the predicted increase in drought, heat, fire, rain, and other factors, they found that 389 of the species studied were unlikely to survive in a 3-degree hotter world.
Bateman was in second grade when she first heard the penetrating call of the loon on a lake in Wisconsin. This was her "spark bird" that awakened her to a "wonderful, wondrous world of birds".
"Last year I brought my 5-year-old daughter, and she heard the loon for the first time, and it's like magic, you can see it on her face.
But as an illustrative example of what science calls "shifting baseline syndrome," her daughter's daughter may never have the same experience.
"(The loon's) Range will shift completely out of the US with climate change," says Bateman. "So you can not go to the same place anymore and hear that bird call."
And more alarming than the loss of songs and color flashes at the backyard feed is what birds like the American robin like Tell us about the speed of change.
"Robins actually hibernate in many places more often than before and do not walk at all anymore," says Bateman.
And she says, if you see a robin in December, always think about this canary in the coal mine.
"Birds are indicators, birds tell us, they tell us what's going on in the environment, and so at Audubon we say birds tell us it's time to act."