Velvet scoter – Melanitta fusca
is a large sea duck, which breeds over the far north of Europe and Asia west of the Yenisey basin. A small, isolated population nests in eastern Turkey. The East Siberian and North American white-winged scoter is sometimes considered conspecific with the velvet scoter, and its two constituent subspecies are then known as M. f. stejnegeri and M. f. deglandi. Velvet and white-winged scoter, along with the surf scoter, are placed in the subgenus Melanitta, distinct from the subgenus Oidemia, black and common scoters.

A small, isolated population nests in eastern Turkey. The East Siberian and North American white-winged scoter is sometimes considered conspecific with the velvet scoter, and its two constituent subspecies are then known as M. f. stejnegeri and M. f. deglandi. Velvet and white-winged scoter, along with the surf scoter, are placed in the subgenus Melanitta, distinct from the subgenus Oidemia, black scoter and common scoters.
It sounds like this
Recording by Jarek Matusiak from Xeno-canto