At this farm in Jedburgh, 1,800 lambs will be born over 20 days.
As thousands of heavily pregnant ewes wait indoors, it takes a colossal effort from both animals, and humans, to make sure things go as smoothly as possible.
Looking after the ewes and lambs takes 24-hour care from the workers on the farm, but it's a process that starts long before:
On this farm, the ewes are left to birth their own lambs without human intervention where possible.
But sometimes, farmers need to lend a helping hand.
Ideally, they want two lambs to every mother, so the offspring won't fight over milk.
So when three lambs are born, one gets taken away and given to a sheep that only has one.
New mothers nurse their offspring in pens, and will be put out to pasture the next day, if they're healthy, leaving the pens ready for the next expectant mothers.
In our next report we'll see how gruelling the night shift can be, as farmers deal with several births at once, and the problems that can lead to tragedy.