>>513050226
Well I just hybridise the aforementioned Ducks. Could be a new species like the Steller's Eider which has Eider and Long-Tailed Duck ancestries.

>>513035708
It's just me posting my favourite Birds. Have a Steller's Eider.

Of dual Eider and Long-Tailed Duck origin, Intergeneric Hybrid! https://www.birdguides.com/articles/ornithology/genetics-suggest-hybrid-origin-of-stellers-eider/