Science. 1970 Apr 24;168(3930):480-2. doi: 10.1126/science.168.3930.480.
American goldfinch females recognize individual males by their individually distinctive flight calls. Goldfinches and other cardueline finch species are also capable of learning new flight calls by imitation during pair and flock formation. Vocal imitation can occur between members of different species as well as between members of the same species. Learning of new flight calls differs in several respects from typical passerine song learning.
美洲金翅雀雌鸟通过雄鸟独特的飞行叫声来识别个体雄鸟。金翅雀和其他唐纳雀科的雀形目鸟类也能够通过在配对和群体形成期间模仿来学习新的飞行叫声。声音模仿可以发生在不同物种的成员之间，也可以发生在同一物种的成员之间。新的飞行叫声的学习在几个方面与典型的雀形目鸟类的歌声学习不同。
