ナショナルジオグラフィックのインスタグラム(natgeo) - 9月22日 11時35分

Photo by @amivitale / A reticulated giraffe grazes at @r.e.s.c.u.e in northern Kenya. Because their necks are so long, reticulated giraffes must splay their legs in order to reach leaves or water sources on the ground. A variety of hypotheses exist for why giraffe necks are so long. Some say it is to reach high food sources; others say the long neck is the result of sexual selection, and still others suggest these long necks allow them to better cool themselves under the hot African sun.

Giraffe populations have dropped nearly 40 percent in three decades, and reticulated giraffe number fewer than 16,000. The decline is thought to be caused by habitat loss and fragmentation, and poaching, but with the lack of long-term conservation efforts in the past, it's hard to know. Learn more by reading my @ナショナルジオグラフィック story "How to save the world's tallest animal" at the link in bio. @giraffe_conservation @sdzsafaripark @thephotosociety #giraffe #giraffes #stoppoaching #kenya #conservation

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