Clark's nutcracker
Flocks are sometimes formed with the hairy woodpecker ("Picoides villosus"), downy woodpecker ("P. pubescens"), northern flicker ("Coloptes auratus"), Clark's nutcracker, and European starling ("Sturnus vulgaris") for a portion of the year, but these species are not important for the maintenance of the flock. The benefits of interspecific flocking are probably for protection from predators during feeding and to assist in locating locally abundant but scattered food.