根据7万4000张照片, 研究人员发现库珀猎杀大鸟而尖头则捕捉小鸟. Researchers found Cooper's hawks hunt larger birds while sharp-shinned hawks hunt smaller birds, based on 74,000 photos.

肯塔基大学的研究人员利用7万4000多张鸟类观察者分享的照片,发现库珀主要捕捉像子这样的大型鸟类,而尖头则关注小鸟如雀仔. Using data from over 74,000 photos shared by birdwatchers, researchers at the University of Kentucky found that Cooper's hawks primarily hunt larger birds like doves, while sharp-shinned hawks focus on smaller birds like sparrows. 两种食鸟是专家, 他们只会到养鸟场去捕猎聚集在那里的鸟类而不是吃种子. The study confirms both raptors are avian specialists, visiting feeders to hunt the birds gathered there rather than eating seeds. 这项公民科学项目强调了公众参与如何帮助填补野生动物行为理解的关键缺口. This citizen science project highlights how public participation helps fill critical gaps in understanding wildlife behavior.