Will gray swallows sleep?

Gray Yan can sleep.No birds do n’t sleep, and gray swallows are no exception. As the birds who are active during the day, they will sleep at night.Usually when it is sleeping, it needs to be quiet, and at the same time, pay attention to avoiding light. If it is winter, do a good job of keeping warm.In addition, if the bird sleeps during the day and activities at night, it means that there is a problem with the work and rest, and you need to adjust appropriately.