Coggswell 1948 Journal 30 (4/3) Dec. 20- approx. 5 mi N Dos Palos, Merced Co., Calif. 3:15 P.M. C.D.S.T. a flock of blackbirds estimated at 2000 individuals was seen engaging in elaborate aerial maneuvers, twisting turning swooping up to great heights only to come soon into an abrupt stop in a leafless tree in a farm- yard at N.W. corner of junction of state highways 152 & 33. While they were perched in the tree I identified both agelaius phoeniceus & a. tricolor males among them. The flock was over half composed of birds in 4 plumage. A second series of maneuvers indulged in a few minutes later was not so long continued nor so elaborate, and ended in flock splitting into several smaller ones which perched in various trees or on wires in the vicinity. -19-21 mi. S. Mendota, Fresno Co., Calif. The country here is very desolate, not plowed or disked and yet with practically no vegetation on the ground. However, in the two areas represented by the mileages mentioned 5. from Mendota (along hiway 33), we saw flocks of mountain clover [see sp. account].