 
When I was an undergrad at UC Berkeley I took Ornithology, and a guy in the class called the sanderlings (the little guys running along the shoreline) "peeps".  Cute name for the cutest little birds.  Always active - almost like hummers.  Most of the time they are feeding along the waves (I got a great pic of one nearly submerged by a wave - generally they escape in time) but then they will suddenly fly off.  I was catching rays and great views of these guys last week.  Love 'em!