The Dyalog Duck was created in 1989 when Pete Donnelly used a simple duck outline to demonstrate a graphics library for Dyalog’s first 32-bit version. Over time, the duck has beome a symbol of Dyalog, appearing in tutorials and being used to demonstrate new features like multi-threading and .NET. It quickly caught on, and rubber ducks were even handed out at early user meetings. More about The Dyalog Duck.