May 14 jewel Lake Tilden Park, Contra Costa Co., Calif. — pairal display. Neither touched the other, nor was any sound made. They displayed for about 2 minutes before breaking off. All the twins the ♀ from the south pair remained with the young, diving and generally feeding them. I might note that the young were scattered from G 11-12 to E 10-12 at one time, scattered single individuals while the ♂ fed near G 11. When the males parted, neither dove or dived, but both dabbled in the water. The N male moved back to feed along the boat and then over to L 21 where he was joined by at least 3 young. As they moved around the E side of the island they gave the “whew” note, much as they did during time of hatching. I had not heard it for some time. No sign of the N ♀ or yet today, all have to check that “Dood” nest for eggs. About 9:30 a.m. the N pair crossed from B 22 to I 20 with 3 young. The ♀ seemed to be accompanying the young the ♂ feeding by himself in area I 21. At 12 o.m. one young was alone moving from H 4 to G 8. In area F 9 was a adult with 2 young. It chased one of the young on two occasions as they moved from there across to C 12. A short time later one bird moved out from the E shore with 2 young, to stop fed