What is the name of German hat with feather?

There isn't one specific German hat with a feather that has a universally recognized name. Feathers have been used as ornamentation on various types of hats in Germany throughout history, and the specific name would depend on the style and period of the hat.

Here are some possibilities:

* Federhut: This is a general term for "feather hat" in German, but it doesn't specify a particular style.

* Pickelhaube: This is a famous German military helmet worn from the mid-19th century to the early 20th century. It had a distinctive spike and sometimes featured a plume or feather on top.

* Trachtenhut: This is a traditional hat worn in some regions of Germany, often with a feather or plume. The specific style can vary, but they often feature a wide brim and a band of feathers.

* Hüte with Feder: This is a more general term, simply meaning "hats with feathers."

To identify the specific hat you're interested in, you'll need to provide more information about its style, period, and any other distinctive features.