Researchers in Australia have found that male palm cockatoos create their own custom-made tools to tap out rhythms on trees to woo potential mates.

澳大利亚的研究人员发现，雄性棕榈凤头鹦鹉会制作“打击乐器”，再通过长时间有节奏地敲击树干来吸引雌性。