Erickson 1934 Turdus migratorius prospinque Bates Well, Pima Co., Ariz. Jan. 23, 1934 Single individual seen near water trough. Quilobaquito, Pima Co., Ariz. Jan. 28, 1934 Calls of a number heard in wash near camp on several occasions during stay in this region. Bates Well, Pima Co., Ariz. Feb. 1, 1934 Robins seen much more numerous to-day than on our first arrival though no actual counts made, seen in mesquite along wash most frequently within a mile of water trough. Seen to feed on mistletoe and forage on bare ground xerxes of creosote association in typical thrush fashions increase due to migratory? Bates Well Feb. 3, Still common around well, perhaps more abundant, calls frequent, but no songs heard. New River Valley, 30 mi. N. of Phoenix, Maricopa Co., Ariz. Feb. 12. Calls of a few individuals heard late in afternoon of 11th and early this morning have not been heard during rest of day or previous to yesterday afternoon. Harquahala Mts., 3000 ft., Yuma Co., Ariz. Feb. 15. Two individuals heard and seen on rocky hill 400 or more feet above level of camp; within first perched in ocotillo branches, flew off and disappeared to north east. Harrisburg, 1765 ft., Yuma Co., Ariz. Feb. 17, 1934. Robins abundant in cultivated fields around pool; foraged in short alfalfa, particularly where recently irrigated,