Foot tembling E B'way 7 June 10

Here are two videos of the champion foot tremblers at the beach on East Broadway on 7 June 2010. About the "foot-trembling" and "foot-tapping" of plovers and lapwings, David Sibley says, "On intertidal mudflats, plovers will often slightly raise one leg and vibrate it so the toes disturb the substrate, causing small prey to move and become easier to see and capture" (Sibley Guide 260).