FIELD NOTES Doug Bell LOCATION: Alcatraz I, S.F. Bay, Calif. DATE: 1 May 1987 a fish. The sitting bird, which looked like a male, head tossed a couple times. The standing bird walked back to the platform, then proceeded across it to a female standing near territory 6. Here he regurg his fish and fed half to her. She then followed him back to the perimeter near territory 20, but she was chased away by male from #32. The other male, the original one, stayed on his spot. 11:10- (along 28 birds in perimeters; 9 on platform. 11:16 - Copulation on TB. Copulation also going on somewhere out of sight. 11:20 looks like the mate of pair 30 returned - mud moving - huge fish regurgitated by M. I have impression that the female of 30 did not defend the nest material stealing of pair 31. Male of pair 30 was apparently gone all morning.