Sullivan 1950 Fulica americana 538 uly 4 Lake Tomsocal, 420 ft., Alameda Co., Calif. - Him so he crossed to the J6 side and was heard over there. Now a series of low notes are coming out over there. Apparently the notes telling one bird it should be on the nest. Twice moved heard churning at J6, or J7, but it may have been against other waterfowl 2 a.m. still no bird or nest so don't leaving. -Jewel Lake, 510 ft., Contra Costa Co., Calif. -At arrival 10:28 a.m. a bird is on nest H17.2 - This nest should have at least one egg hatching today or more. I think the incubating bird is the ♀ At one time I saw one immature at F9, it was getting the dark head and back of neck, also the bill is very dark. otherwise it is going into the dark phase of immature plumage, the last juvenile plumage. Now at 11:50 I have seen only two birds today, the incubating bird and the one immature. 12:47 finally saw four immatures in the S pool. One has a quite light bill, another less light, and two dark bills. All seem to be going into the last juvenile plumage, that is, the dark gray phase. 12:47 - now an adult is feeding nearby, no indication of antagonism shown. either in fear reaction of imm or aggres- sive attitudes of adult. 12:55 - all 5 immatures seen feeding in the south pool. The fifth seems to be inter-