Chickens in a Farmyard Artist’s Print from Worpswede

Two chickens and a rooster in a traditional farmyard. The work is dated [19]89 and signed by the artist, but we have been unable to make out the signature.
An annotation on the back reads Worpswede and a farmhouse typical of Worpswede, Germany (the famous artist’s colony near Bremen) can be seen in the background.

We have not been able to make out the artist’s signature which is shown below.