Elwetritsch is a made-up creature (kind of like a mythical creature) that comes from the folklore of the Palatinate region in Germany. It's said to be a small animal that looks like a mix between a bird and a rabbit, and it has long, sharp claws and a beak. Some people say it has soft, fluffy feathers while others claim it has rough, scaly skin.
Now, remember when we talked about how it's a made-up creature? That means it's not real and we can't actually see one in real life. It's just something people in that part of Germany made up a long time ago as a fun story to tell their friends and families.
In fact, some people even tell funny stories about how the Elwetritsch can speak in a human language! But just like how we can't see a unicorn or a dragon or a mermaid, we can't see an Elwetritsch either. It's only in our imaginations and in the stories we tell each other.