What do crows fear most?

Goshawk, the bane of crows. Goshawk is a small and medium-sized raptor. The body length can reach 60 cm and the wingspan is about 1.3 m. The top of the head, the pillow and the side of the head are dark brown, the pillow tip is white, the eyebrow lines are white and mixed with black lines; The back is brown and black; Gray-brown and white stripes are densely covered below the chest; The tail is grayish brown, with four wide black horizontal spots and a square tail. When flying, the wings are wide, white under the wings, but densely covered with dark brown horizontal bands. Females are significantly larger than males.

Crows like to live in groups with strong clustering, and a group can reach tens of thousands. Living in groups in forests or fields, they are forest and grassland birds, mainly foraging on the ground, and their gait is stable. Except for a few species, they often nest in groups and wander in groups in autumn and winter. Complex behavior, showing strong intelligence and social activity ability. Generally fierce and aggressive, they often prey on eggs and chicks in waterfowl and wading nests. In addition, because they like to rot and peck at agricultural waste, they can eliminate the pollution of animal carcasses and purify the environment.