Kestrel [sǔn] (scientific name: Falco tinnunculus) is one of the small raptors in the Falcoidae family. The beak is short, with odontoids on both sides of the apex, and the base is not covered with wax film or whisker-like feathers; the nostrils are rounded, and a columnar bone stick can be seen from the nostrils inward; the wings are long and narrow, and the wings are fast-paced; the tail is slender . Fast-flying and good at hunting down prey in flight. Habitat in the mountains and the wilderness, more solitary or in pairs, flying high. Famous for its soaring habit when hunting. Eat large insects, birds and small mammals. There is a difference in the color pattern of the sexes, and the color of the male bird is more vivid.