In case you didn't get this from Cornell, here is a fun shorebird quiz,
very well done and not too easy. This Is an advertisement for their
on-line Shorebird ID course. Bob OBrien Carver OR
https://academy.allaboutbirds.org/sample-lesson-shorebird-identification/?utm_campaign=bird%20academy%20general&utm_medium=email&_hsmi=271807378&_hsenc=p2ANqtz-9sq5oXVh-DxlX9aopEWbJcsvJAeA7DtYsJoyMdY1n4xPUNiTrpxrbx_dNKXOVkJHmRw58-kgUGPdeUtcfNcRTcR6g6tQ&utm_content=271643113&utm_source=hs_email