FIELD NOTES DOUG BELL JUNE 30, 1985 LOCATION: ALCATRAZ ISLAND, SAN FRANCISCO BAY, CALIF. WEATHER: Clear, sunny. Wind ~10-15 mph. TIME: 12:00 - 16:00 Maren and I did a general survey of the island. Disturbance of the birds is very high - gull chicks of all ages from < 1 week old to about 4 weeks of age are present all over the island. It appears that most chicks are about 1/3 gull-size, and can run quite well upon our approach. The cistern-area has the most advanced chicks, with birds being 1/2 - 3/4 gull size. Atop the industry building I counted at least 38 chicks, with one or two birds still possibly incubating. 3 nest in the rubble area and along the walkway by the Power House had eggs (2-3). 2 nests on the Parade Grounds also had either incubating or brooding adults on them. Collected 2 [illegible] dwarf eggs from the nest that we had at first (4 weeks ago) thought was a Heerman's Gull. These eggs are definitely from a Western Gull's nest. Also collected a single egg from a nest that had two 3-4 week old chicks in it. Picked up 2 dead gulls too. One 038 was smelling quite rotten and was infested with maggots, the other 037 was fairly dried out and must have been dead for quite a while. All the above eggs & birds collected were found along the western perimeter south of Industry Building. Other birds: 1 Heerman's Gull on I.B, 3 Heerman's flying. Brancher Black-crowned Night Herons (2 adults, 3 juv. (separate nests). Barn Swallows, fledgling House Finch, House Finch nest w/eggs, Annas Hummingbirds, White-crowned Sparrows - singing. Least Turn seen on boat ride over to S.F. Juv & Sub-adults West & Calif. Gulls @ Aquatic Park, S.F.