When referring to a male duck I was told that I should always use the appropriate term "Erpel" when talking about the bird as depicted here:
Usage of the alternative term "Enterich" should be restricted to a more poetical usage or in a context as shown below:
Admittedly "Enterich" sounds awkward to me but Duden lists both words as synonyms with approximately same usage frequency. In the German Wikipedia the term "Erpel" seems not to exist in the context of ducks.
Is it true that there is a different usage of both terms? When would we prefer one over the other?