One northbound wood thrush, however, chose not to cross the Gulf of Mexico, possibly because it was underfed and tired due to environmental damage in its wintering grounds in South America.

• 一个北画眉鸟，不过，选择不越过墨西哥湾，这可能是因为这是营养不良和疲惫，由于环境破坏其越冬地在南美洲。