Fulica americana 132 Late Temescal, #20 ft., Alameda Co., Calif. There also are some of the dead leaves mixed in but these are few. It is a floating platform anchored to upright stems. Some of the surrounding cat-tails have been broken down and incorporated into the platform. Jewel Lake, 510 ft., Contra Costa Co., Calif.- 2 birds on the lake at 2:30 p.m. One is a tagged bird supposedly B, the other is an immature bird, supposedly of the 2nd North brood. This immature bird still has the mottled bill tho the rest of its plumage is the same as the adults. It has a shiny black head of the adult, and the slate gray plumage of the winter adult. Oct 15 same locality - 1 bird on the lake, it looks like the unmarked immature but it is quickly losing all of the immature characters- the bill, its last remaining mark, it almost completely adult in character. A few minutes later saw two more coots on the lake, the three of them being together. Two were young birds by their obvious bill characters while the third was tagged presumably B. Oct 28 same locality there are four coots on the lake today. One is B, two I suspect are immatures, while the fourth is a male note individual showing obvious intent in B (and vice versa). About 1 p.m. the male was seen chasing one of the immature It was a short chase only about ten feet at F-29. - Upon closer inspection two of the birds on the lake are obviously immatures. No bird is not distinct yet.