Fulica americana 352 Apr 28 Lake Terascal, 420ft., Alameda Co. Calif. He alert, head up position. The ♂ in the bird on the nest. The ♀ was just leas "pooking" down near P16. The ♂ has a shield ⊙ while the ♀ shield is thus - ⊗. With a good observation it is possible to distinguish these two birds by this characters. Territory between the W & M pair seems to be breaking down. For the last ten minutes, ♂ R has been feeding at G/10 while ♀ feeds H/12, with no sign of antagonism. 3:30 p.m. E♀ has come N to Q/20, is pooking and going back S. 3:31 she is still there. ⊗ came over from G/17 to reach H/12, not charging but moving with a directness that suggests attack, but even when he got there no attack was pressed. Now, 3:33 E♀ is just S of the nest. Now she has gone on to P/23 and North. Now 3:36 I'm leaving to get my gear for an all night stay. Back at 3:55 p.m. for night. Apparently, both birds were either off the nest before I arrived or the nesting bird got off when I arrived. Both were drswimming in the E inlet, silently and close togeher, picking up (insects?) off the water surface. At 4 p.m. the ♀ went around to the S side of the nest clump and was settled on the nest by 4:01 p.m. The E ♂ remained