Nets have been used in Canada for years to protect icewine grapes from being eaten by hungry birds. It is really common sense to try and protect a valuable crop like Burgundy grapes. Would be nice if there were a temporary way to deploy the nets when there is a weather warning, but that is not probably practical.
Nets are used in Germany against birds, too, at least in the Ahr Valley. I remember seeing many plots covered in blue netting, and I recall someone saying that the nets were used particularly for Fruhburgunder, a variant of pinot that ripens early. Evidently the birds are drawn to that grape.