在非洲卡拉哈里沙漠，由于雨量稀少，所有的動物自出生就要面臨干燥的無情考驗。由于納馬夸公沙雞胸部的羽毛吸水性非常強，為孩子尋水的責任就自然而然落到了它們“胸”上——公沙雞每天都會到湖邊把羽毛在水里浸濕后再飛回家，以此滿足小沙雞對水的渴求。

Sandgrouse（沙雞）: A father Namaqua sand grouse of Africa's Kalahari Desert flies as far as 50 miles a day in order to soak himself in water and return to his nest, where his chicks can drink from his feathers!