Behavior: When resting, Snowy Plovers can often be found taking shelter from the wind near beach debris or in small depressions in the sand. (parksconservancy.org)
Remove and take blunt handle of spoon or other small rounded instrument and make small depressions in the surface every inch or so. (wheatbellyblog.com)
There they spotted lines of small depressions in an area of hardened ash that had long been quarried by locals. (discovermagazine.com)