要论忠诚，美洲鸵肯定不是，因为它们没有固定的配偶。正因如此，雄鸟要独自承担起孵卵、喂食、照顾和保护后代的重任。

 Rheasare large South American birds similar toostriches. Father rhea takes sole care of his young. From eggs to chicks, he feeds, defends, and protects them until they are old enough to survive on their own.

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