What are the signs of sheep in heat?

Signs of sheep in heat, or estrus, typically include increased vocalization, restlessness, and a tendency to seek out ram presence. The ewe may exhibit tail wagging and a stance that indicates receptiveness, such as standing still when mounted. Additionally, there may be a slight discharge from the vulva. These signs usually last for 24 to 36 hours, making it important for sheep breeders to monitor their flock closely during this period.