Fulica americana Mr. 30 Jewel Lake, 510ft., Contra Costa Co., Calif. 2 minutes they broke off the S to going To H11 the N drifting back to the island. 10 eggs in the nest at P25.7, 10th probably laid on the 29th. Eggs slightly warm, at least, not chilled, suggesting at least some incubation. Parent birds showing now particular interest however. Mr. 31 Lake Tennescal, 420ft., Alameda Co., Calif. Saw violent disagreement among fids today at 5 p.m. Most of it centered around about I 12, but other battles were observed at I 8, and generally all over the area from H to L-10 to 13. One bird chased a bird from L11 to K16 (now paired display, and a severe fight at I 8. Both males in it, and the f from SW area trying to get in. SW on bottom most of time, when they broke off he flew, those who started to attack him; Relatedly, the SE came out of K7 joined in paired display, broke off with typical procedure - then a chase at L11 - SE came out to chase the birds out to L12 - the flock seems to be trying to edge in a territory - then E flew from Q21 to M12 to charge and drive the flock out of the area there The SE drove three males to J10. There seems to be a general upward in progress, I can't tell who's