It is a very territorial bird, and signals its intention to defend its territory by holding its wings downward in an inverted V and fluttering the tips of its flight feathers.
牠們的領域性極強，在空中盤旋時會將雙翅下壓成倒Ｖ字型，並抖動飛羽末端，作為護衛領域的警示。松雀鷹：