(TIEGER 1956 CASPIAN TEWN (HYDROPERONE SABANA) BAY FARM ISLAND, BRANCH CA, CALIF. AND BIRD DROPPED TOWARD WATER. DID NOT GO TO FAR UNDER WATER - JUST PART OF BODY [illegible] IN CYCLAR TOWN, WINGS HEN O PARTLY OUT THEN FLAPPY UP SLOWLY INTO AIR AGAIN. FROM TIME TO TIME UP TO 10:00 AM OTHER CASPIAN'S GOING THE ORIGINAL 2 UNTIL THERE WERE 8 OR 9 CIRCLENT. WHEN BIRDS APPARENTLY WANTED TO MAKE SPACE AS FROM THE SECOND AREA AWAY (TO ANOTHER?) THE HEAD + BILL WERE POINTED ALMOST ST. FORWARD + WING BEAT SEEMED TO BE QUICKENING SLIGHTLY. IF DIVING TOWARDS ANOTHER BIRD DIVING WAS VERY OCCASIONALLY. ALSO BIRDS NOVER GO SUDDENLY WHEN THEY POSSIBLY SIGNTO A FISH WHILE FLAPPING AROUND SLOWLY, RAISING THE FORWARD PART OF BODY BUT WITH HEAD + BILL STILL HELD ALMOST ST DOWN.