Wisdom, a Laysan albatross, is living proof that age is just a number.

智慧是一只信天翁，它活生生地证明了年龄只是一个数字。

The winged creature -- which is at least 68 years old and is the "world's oldest known banded bird in the wild," according to the US Fish and Wildlife Service -- laid an egg on Midway Atoll on November 29, biologists there confirmed.

据美国鱼类及野生动物管理局介绍，这只有翼生物至少有68岁了，是“世界上已知的最年老的套上标记环的野生鸟”。11月29日，生物学家证实，这只鸟在中途岛产下一枚蛋。

"Wisdom and her mate Akeakamai return to the same nest site on Midway Atoll each year. Albatross often take time off to rest between egg-laying years, but the pair has met on Midway to lay and hatch an egg every year since 2006," the wildlife agency continued.

该野生动物管理局表示：“智慧和她的伴侣阿克阿卡迈每年都会回到中途岛的同一个巢穴。信天翁通常会在产卵期间休息一段时间，但自2006年以来，这两只信天翁每年都会在中途岛相遇，然后产卵孵化。”

The bird has laid an estimated 40 eggs during her lifetime, NPR reported.

据美国国家公共电台报道，这只鸟一生中大约产下40个蛋。

When she's not laying eggs, Wisdom spends 90 percent of her life at sea, where she feeds on squid and fish eggs.

智慧不下蛋的时候，90%的时间都在海上度过，在那里她以乌贼和鱼卵为食。

"In the past, many albatross were banded with aluminum¹ bands that sometimes became corroded² by sand and salt water. These early bands would often fall off in 20 years or less," the US Fish and Wildlife Service said.

美国鱼类和野生动物管理局称：“过去，许多信天翁腿上都绑着铝环，这些有时会被沙子和海水腐蚀。早期的脚环通常会在20年或更短的时间内脱落。”

But the same is not true for Wisdom, who was first banded by a biologist named Chandler Robbins in 1956.

但对于智慧来说，情况并非如此。1956年，生物学家钱德勒·罗宾斯首次为智慧戴上了脚环。

Experts have replaced Wisdom's bands throughout the years and this confirms the bird is the same one Robbins first banded all those years ago.

多年来，专家们一直都在给智慧更换脚环，这就得以证实这只鸟就是多年前被罗宾斯首次戴上脚环的那只。