I’m curious - where do the sheep stay when it snows during the real winter season? Was this a freak storm that caught them unawares? Have they been recently sheared?
In spring, many lambs have been recently born, or the ewes are expecting, and not as mobile. Throughout winter, the sheep draw on their stores of winter fat, and become a bit lean. By now, they need a break from the cold weather, they don’t need a snowstorm.
Don’t know about over there but my grandson raises sheep in the midwest. It’s show time in many states for the school kids and breeders for their animals, the momma’s are all sheared and ready to show and it is also lambing season. But they are kept in a barn unless the weather is bad.
Problems do occur when the snow is unusually deep or is unexpected. Sheep are generally unable to care for themselves - and we see that in both the two legged and four legged kinds.