Three shore birds for ID please

largelylivin

I know these are common, but I've checked Sibleys and still I can't decided. To prove that I'm not helpless, I saw my first Glossy Ibis on the same day and didn't have any trouble identifying it! I can't decide if #2 and #3 are the same or not.

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Thanks in advance.

largelylivin

bump. I'm really having trouble identifying these.

jwear

plover and dowitcher