Why do birds always circle around each other?

Birds often circle around each other as a social behavior related to communication, territory establishment, and foraging. This behavior can help them locate food, identify potential threats, or engage in mating displays. Additionally, circling can facilitate group cohesion, allowing birds to stay together while they navigate their environment. In some species, these circles can also be a way to thermoregulate, as they take advantage of rising warm air currents.