One was a bob-tailed Railone was a Snipe with far-back eyes and a finger-beak like a Woodcock'sone was a Spotted Sandpiper that teeters and whistles 'tweet-weet'and the other was a tiny little Sandpiper with a very sad cry.

A bird's beak is its mouth, and the under mandible moves up and down, like our chins when we eat or talk.