Seen today (1st April 2023) on western Lake Skadar, Montenegro. May be totally wrong but my best guess is a hybrid common pochard x ferruginous duck. At first I just thought it was an odd pochard but the strongly-marked back and not-red eye made me wonder about a hybrid. I haven't seen any pochards here (unless this is one!), but have seen one ferruginous duck.
Unfortunately it was distant and these are all the (bad) photos.



Unfortunately it was distant and these are all the (bad) photos.


