Dennis "Birdman" Michael Zwerenz

Dennis “Birdman” Michael Zwerenz, 80, of Hampshire, IL passed away on Tuesday, August 5, 2025, at home surrounded by family.

Dennis was born on January 27, 1945, in Chicago, IL to Charles and Lillian.

Dennis worked many years for TRW as a computer programmer/analyst and retired from CR Industries in the same field. In his free time, he enjoyed art, fishing, bowling and bird watching, especially waiting for his favorite species, The Purple Martin! He holds an unofficial record for the largest Purple Martin birdhouse built to date! He was also a member of the Purple Martin Conservation Association and attended regular yearly functions. 

He is survived by his wife Joanne; 3 children Jeffrey (Lonna) Zwerenz, David (Christina) Zwerenz, Kenneth (Terrie) Zwerenz, brother Gerald (Josephina) Zwerenz of Oswego, niece Diane (Lance) Delabarre, great niece Lillian, grandchildren Alexis (Christian), Emily, Lucas, Kaylee, Rachel, Noah, Luna, Caitlyn, 2 great grandchildren Jaxson and Gianna, and his best friend Bob Ring.

He was preceded in death by his parents and his good friend Elmer from Wisconsin. 

The celebration of life will be private.

To send flowers to the family, please visit our floral store.