Ferruginous duck? Cottbus, Germany (1 Viewer)

[Henry_Flower]

Hello,
Can anyone confirm this presumed ferruginous duck, seen today in Cottbus, Germany? We're puzzled by the asymmetry between the left side (well-defined white patch) and the right (much bigger white area on the side). Could it be a hybrid of some kind?

 

[kuzeycem]

The large white area on the right side isn't the undertail, looks like the white wing bar peeking out.

 

[tconzemi]

Right wing with secondaries cut away, so escaped bird

 

[Henry_Flower]

Thanks, that solves the puzzle!