哇塞!谢谢楼主呢^^考的真好啊^^沾喜气沾喜气^^嘿嘿 那个whipbird那篇文章,机经里这道题有争议啊~不知道楼主还有没有印象? 细节说female bird tends to sing more in the presence of another single female or typically in presence of another pair of male-female 还有说female sings more when another male is here ...another chipbird couple..another female.