The whistling vessel consists of two interconnected connected vessel bodies. The closed spout with a small hole is designed as a bird's head. Due to the elongated, slightly curved beak, it could be a vulture such as Coragyps atractus (see Schjellerup). Both vessel bodies are similarly decorated: 2 fields each with knobs and geometric serrated patterns. Similar vessels from the Gretzer and Macedo Collection can be found in the Ethnological Museum Berlin (SMB, inv. no. V A 47781 and V A 3639). See also RJM 31768.