P.A. Kelly 1984 Journal Alcatraz Island, San Francisco Bay, California May 31 Ray Perotti met me at the HVT front desk at 9:15 am, we headed off and got BART to S.F. Embarcadero Station $2.80 round trip. We walked from the Embarcadero along the Docks to Pier 41 where we got the Red White & Blue Fleet to Alcatraz. Ray has a PhD in Behav- iour & Ethology and has been working on Western Gull Breeding Colonies on Alcat- raz for 2 yrs. He gave me his wife Cynthia Annetta's (Barlow's Lab on food behaviour) park service jackets, those jackets got us a free ride and VIP servic e on the ferry. Before Ray proceeded to work on his colonies, he showed me to some likely places for trapping. And I proceeded to set Longworths baited with a mixture of scratch grain and oats. Seeing as this was only a pilot study I only took 25 traps with me. Nothing is known for definite about small mammals on Alcatraz although Ray and Cynthia have occasionally found mouse remains in the vicinity of gull nests. Lickicker pronounced one previous