July 1949 Sandpipers Calamus maculatus Aug 17 Big Lagoon, Humboldt Co., Calif.- Collected 1 bird from a flock of 3 of this species feeding on Potamogoton covered mud flats with Least Sandpipers. Summary Northwest Coast Transact Calif.- Of all the shore birds, this species was probably represented by the greatest number of individuals in the Big Lagoon area. Even as they still seemed to be restricted to the mud flats covered by a thin layer of water, and to a less extent where found along the waters edge on gravel bars, the Least Sandpiper was more abundant here. These birds were pretty constantly in flocks, seldom was one individual seen active alone.