According to the wikipedia article, a shieling can be a hut, a collection of huts, or a pasture. This is too ambiguous to be of any use in OSM. On the other hand, the wikipedia article ignores that the same kind of features exist all over the world. The photos in the wikipedia article could as well have been taken from my home country, Austria.
When I first came across the tag in Taginfo and read the "abandoned mountain pasture" in the description, I thought that it's about former pastures which have been reforested. Their smooth surface makes them look very distict from other forests particularly when looking at a digital terrain model (DTM) made with a laser scan. So it would be nice to have a tag for these reforested pastures/meadows. But as I see now, this is not what's called a shieling, even though that term is so ambiguous. --Fkv (talk) 11:21, 16 September 2017 (UTC)