What is cap with feather?

A cap with feather is a type of headwear that has a feather attached to it as a decorative element. This style of cap is often associated with traditional European attire, particularly in the Renaissance period. The feather is typically long and slender, and it is attached to the cap's side or rear using a clip or ribbon. The feather can be made from a variety of birds, although peacock feathers are one of the most commonly used types. The cap itself can be made from a range of materials, including wool, felt, leather, or even silk. The cap with feather is still worn today as part of traditional costumes in various parts of Europe, particularly during festivals and special occasions.