LTIEBEN 1956 SWITCHBACK (LIMNORUMS [GREYSEUS?] APR7 Bay Farm Island, Alameda Co., Calif. 10:45 AM - Saw 12 or so in MUD BOTTOMS POOL IN "ISLAND" OF MUDDIN SAW CAEMIA POOL ABOUT 25' LONG X 10 FT WIDE MUO ISLAND ABOUT TWICE THIS LONG X WIDE - NOT TIDAL. ABOUT 3 INCHES DEEP. BIRDS WERE PROBING IN WATER NEAR MARGIN (?) AMONG WITH HALF A DOZ OR SO WESTERN SONORIPERS, WHEN GROUP APPROACHED A BUNCH FLEW OFF, SHOWING WHITE BAR UP BACK. BILLS LONG + STRAIGHT, SUGGESTION OF OAKL + LIGHT STRIPES. 11:30 AM SAW 3 ON EDGE OF MUDDY PEBBLE BAR AS THEY WENT OUT FROM NW CORNER OF ISLAND, [illegible] IN WATER 2 INCHES DEEP, [illegible] [illegible] FEEDING. BLACK & WHITE WING PATTERN NOTICED. [illegible], 3 WHITE STOOD A-2 FT. AWAY NOT FEEDING JUST STANDING. NEARBY NECK, FLYING FLEW OFF TOGETHER, OWITCHERS FED BY STANDING IN 2 INCH WATER OR SHOWING UP TO MUDDY SHORE, WITH HEADS DOWN AND CONSTANT UP & DOWN PROBING WITH LONG BILL. THEN A FEW STEPS FORWARD + MORE PROBING. CANI WHEN LOWING "CHEK-CHEK-CNEE WEE-WEE-WE" QUITE NOISY. 2 SEEN VERY WERE QUITE CINNAMON- COLORS FROM HEAD BACK TO FIRST OF BEAK + MIDDLE OF BEAK - OTHERWISE MORE GREYISH BROWN HERE.