Mares & foals are brought in every night until weaning, allowing mares to be fed twice daily and general health, limbs etc to be checked, this also allows the foals to be well handled and halter friendly by the time they are weaned. If the weather allows and we have an exceptionally dry summer and very good quality grass, after the first three months of lactation the mares & foals may spend several weeks out 24/7 but only had one year like this in three.
Mares rejoin the herd at weaning and weanlings are stabled together with daily turnout. When fully weaned they either leave for their new homes as well handled weanlings or rejoin the herd of all ages, 24/7 with access to large barn well bedded down throughout the winter months.
All of our stock regardless of age are rugged in winter, our climate is far too wet and horses suffer rain scald easily regardless of how thick and fluffy they are if left unrugged. In summer 2011 we had 17 days of dry, just to give you an idea of how wet it really is here so you can imagine what winter is like 
Youngstock that are shown during the summer are turned out at night into the mare & foals day pasture and stabled during the day which allows for inhand work and prepping for shows ect.
Pregnant mares are then seperated from the herd in the last three months of gestation with daily turnout and stabled at night, again allowing them to be fed the optimal amounts of stud balancer twice daily as a preventive measure against OCD