凯亚鹦鹉通过独特的骑士比武技巧克服缺失的喙，主导群体。 Kea parrot overcomes missing beak using unique jousting technique to dominate group.

尽管他的嘴上半部分缺失, 但他却成为群体中占主导地位的雄. Bruce, a kea parrot from New Zealand, has become the dominant male in his group despite missing the upper half of his beak. 研究人员发现他开发出一种独特的"斗"技巧, 以恐吓对手并获得食物, 在战斗中保持不败并且享受较低的压力水平. Researchers found he developed a unique "jousting" technique to intimidate rivals and secure food, remaining undefeated in fights and enjoying lower stress levels. 他成功的研究突出了行为创新如何克服高度智能的物种所面临的物理局限. His success highlights how behavioral innovation can overcome physical limitations in highly intelligent species.