Is it related to the weather to see crows hovering in the air?

Crows are hovering in the sky, probably because the weather is getting cold, and crows are flying to find warm places. They circled in droves, telling people that the weather was going to change.

Crow: it is a general term for several black birds in the family Corvidae and Corvidae. Also known as the old man, his mouth likes singing. It is the largest bird in passeriformes, with a body length of about 50 cm. The whole body or most of the feathers are black, hence the name. Feathers are mostly black or black and white, with long beaks, some with bright white collars, and Kuroha has a purple-blue metallic luster; Wings are much longer than tails; The mouth, legs and feet are pure black. The distance from the nostril to the forehead is about 1/3 of the length of the mouth. The nose must be straight and reach the middle of the mouth.