Hummingbirds Face Possible Extinction Due to Global Warming - Nature World News

A study by Austin Spence and his team shows that global warming causes decreasing oxygen availability and low air pressure which pose challenges and could spell possible extinction for hummingbirds

Hummingbirds may face extinction as a result of global warming, Newsweek reports on a new study. Scientists predict that the avian species will have to migrate north in search of cooler climates or p… [+3730 chars]

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