英语翻译Hethensetupexperimentswithcagedstarlingsandfoundthattheirorientationwas,infact,inthepropermigratorydirectionexceptwhentheskywasovercast,atwhichtimestherewasnocleardirectiontotheirrestlessmovements

问题：英语翻译Hethensetupexperimentswithcagedstarlingsandfoundthattheirorientationwas,infact,inthepropermigratorydirectionexceptwhentheskywasovercast,atwhichtimestherewasnocleardirectiontotheirrestlessmovements.3.Whic

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何祖玉的回答：

网友采纳　　于是,他对圈养的八哥做了实验,并发现除了在阴天和那些由于分不清方向而变得焦躁不安的时候,事实上,它们一直都处在正确的迁徙方向.a.实验表明圈养八哥缺乏方向感,会焦躁不安b.实验表明在它们正常的迁徙途中,圈养八哥...