Hummingbirds May Struggle To Go Any Further Uphill To Evade Climate Change - SciTechDaily

Any animal ascending a mountain experiences a double whammy of difficulties: the air gets thinner while it also becomes colder, which is particularly problematic for creatures striving to keep warm when less oxygen is available. For tiny animals with the high…

Annas hummingbird (Calypte anna). New research shows that hummingbirds would struggle to cope if climate changes drives them to much higher elevations. Any animal ascending a mountain experiences a … [+4336 chars]

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