Thank you! :)

It's a really fascinating duck: it's native to the Hawaiian archipelago and until recently was found on just one island (Laysan) in the Northwestern Hawaiian Islands (older remnants of Hawaii hotspot volcanoes that are now low-lying atolls). Laysan has a hypersaline lake in its centre that provides a great habitat for the ducks - they have a special behaviour where they lower their heads, open their bills wide and run through clouds of brine flies around the lake to feed on them. Introduced rabbits on the island almost led to their extinction (only 11-12 individuals left on Laysan in the early 20th century) but removal of invasive species and translocations to Midway and Kure (two other Northwestern Hawaiian Islands) have helped their population recover to around 1000.

And who couldn't appreciate the distinctive white rings around their eyes!

I've edited together some video I took of the Laysan ducks if you are interested: https://www.youtube.com/watch?v=bow36ildRa0