Not only this, during the fifty days and nights it takes to incubate the eggs the male will most often lose up to about a third of his body weight as he cannot wander far to forage for food.

• 不光是这，由于不能去太远的地方捕食，雄鹤鸵在孵卵的前五十个日夜就会消耗近三分之一的体重。