科研之友
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摘要
<正>现已百岁高龄的Alfred Larson几十年如一日地致力于北美蓝知更鸟的保护工作,他的努力使这一濒危鸟类的种群数量恢复至历史最高水平,他的事迹也被拍成了一部纪录片。100-year-old Alfred Larson has gone through a lot in his lifetime,but one thing that keeps him going is bluebirds.When Alfred retired in 1978,he wanted to find a hobby or something to do so that it would keep him busy and provide him with a sense of purpose.When he read a National Geographic article about crafting wooden nest boxes for bluebirds to help boost their populations,he decided to give it a try.
