Adilie penguins toddle along the ice. Inhabitants of Antarctica, these penguins are experiencing mixed impacts from global warming, depending on their location on the continent.

Global warming appears to be negatively affecting penguins living on the Antarctic Peninsula, because melting ice is decreasing the availability of food, causing the birds to swim longer distances to find sustenance. In more southerly regions, ice is melting faster, giving the penguins earlier access to food in the spring, which in turn increases their reproduction rate.

Global warming also appears to be affecting other bird species, including emperor penguins, rosy finches, and tawny owls.

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Photo gallery by Chelsea Lane-Miller