Fulica americana -61- July 10 Jewel Lake, Tilden Park, Contra Costa Ca. Calif. -at H/8 - the marked adult of the S pair flew to D 25 - shortly after I was out of the water there was some commotion at the N end of the lake - I suppose the N pair cleaning all the interlopers out. July 11 - The bird F-45-624032 that died yesterday was shinned today. It had been hit in the sacral area and suffered a severe internal hemor- rhage - the coelom was pretty generally filled with blood. As nearly as I could determine it was a male - there were two quite distinct adrenals - yellow and in addition - two oblong yellow bodies that I suspect were testes. The skull was single layered over the entire body and head. July 12 - Same locality - at 4:45 p.m. - 8 or 9 birds were seen feeding in area F-H 10-13 There were 2 unmarked immatures + 1 un marked adult - and in addition R/S, R, G, Y, G/B, R/15, S/16, G/S. Right now, 4:50 p.m. - I am able to see 3 unmarked immatures and 1 unmarked adult - just now B has chased all the birds out of the area N of F 9 - even chasing G/B around the point, she alighting at F/6-4 - then she retreated north towards E/12 - th birds routed included at least one S pair adults. [Sitting in the car at BB 9 - I can distinguish, with those