Strictly speaking, I think my dad called it a Tyrolean hat (or Tirolerhut in German). Worn, here, as part of national costume, by my not-so-happy father and his brother.
They were once worn in countries like Austria, Italy, Germany and Switzerland but are not so common, now.
Apparently one style of Tyrolean became popular when Edward VII wore it during the time he lived in the Alps. I didn’t find his quite as dashing as Waldemar’s (my dad).
Only one of those long feathers was thinking inside the square for Becky’s challenge, today.