Feathers

This is posted here so I can ask a Polish cyberfriend what he knows about the use of this kind of cavalry dress in the early 1600s. I’m also curious as to what birds provided those feathers, and on what occasions those things might have been worn. Presumably they wouldn’t be good in high winds when one needed to be agile. (I still don’t think this is a good movie, but it may not be Mikhalkov’s worst.)