What do parrots do in winter to survive?

keep them inside make sure they don,t go outside

Birds are usually comfortable in the same temp as we are, if you are comfortable then they should be....like a baby. Keep them as warm as you would keep yourself. They will puff up and shiver when they are too cold. If you have to use a heat lamp on birds stand with your hand on the front of the cage where the light is hitting it and wait for awhile......if your hand is not to warm then they should be ok but check on it for a bit until you are used to it.