- Who
- Mark Hillery, Damen Hillery
- What
- 1.43 metre(s)
- Where
- United States (Danville)
- When
The longest duck call measured 1.43 m (56.3 in) and was made by Damen Hillery and Mark Hillery (both USA) in Danville, Illinois, USA, and was measured on 30 October 2013.
The duck call constructed by Damen and Mark replicates the call of a mallard hen.
