I saw this Hawaiian coot at Kaloko-Honokohau National Historical Park, north of Kailua Kona. It was puttering around in one of the inland lagoons, periodically diving for food, as it is in these photos.
For more information about Kaloko-Honokohau National Historical Park, go to https://www.nps.gov/kaho/index.htm or bigislandhikes.com/kaloko-honokohau-park/.
Graham's Island 
A new species for me. I didn’t realise Hawaii had an endemic Coot.
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A descendant of the American Coot I believe. It’s endangered here, though I see usually see several when I visit Kaloko-Honokohau National Historical Park, north of Kailua Kona.
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Yes I did some research. For some reason I had that there was only the Eurasian and American Coot in my head. There’s quite a few more, Argentina and adjacent countries in South America have several.
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And don’t forget the old coots the world over.
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And all the bald coots.
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