sbruenjes Posted October 23, 2022 Share Posted October 23, 2022 I was looking through older pictures, and I have this bird from Barnegat Lighthouse, NJ in Feb of 2021. How do I differentiate if this is a King Eider or a Common Eider. I don't think the bill is black, so I think its Common, but any help would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Quiscalus quiscula Posted October 23, 2022 Share Posted October 23, 2022 Common Eider, by bill shape. 4 Quote Link to comment Share on other sites More sharing options...
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