Like humans, baby swamp sparrows learn to communicate by copying adults.

和人类一样，沼泽麻雀宝宝通过模仿成年人来学习交流。

B Like humans, baby swamp sparrows learn to communicate by copying adults.

B 像人类一样，沼泽麻雀宝宝通过模仿成年人来学习交流。

" Swamp sparrows very rarely make mistakes when they learn their songs, " says biologist Robert Lachlan.

“沼泽麻雀在学习歌曲时很少犯错误，”生物学家罗伯特·拉克兰说。

Between 2008 and 2009, Lachlan's research team recorded the calls of 615 male swamp sparrows across the northeastern United States.

2008 年至 2009 年间，拉克兰的研究小组记录了美国东北部 615 只雄性沼泽麻雀的叫声。