Grus americana

Popular Science - - FEATURES -

BY THE 1940S,

North Amer­i­can hun­ters and de­vel­op­ers had driven these birds to near ex­tinc­tion. Though they re­bounded, chang­ing weather threat­ens them anew. Cranes nest in Arc­tic wet­lands, sur­rounded by nat­u­ral moats. Per­sis­tent warmth shriv­els these de­fenses, ex­pos­ing chicks to preda­tors. But in­tense storms can drown hatch­lings. An­nual mi­gra­tions to Texas bring other chal­lenges: Dry wa­ter­ing spots along the way force them to fly farther be­tween rest stops.

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