Morning Doves (many), Turkey Vulture, Marsh Hawk, W. Red-tailed Hawk, Black Phoebe, Calif. Horned Lark, Yellow-billed Magpie, Calif. Jay, W. Crow, Red-winged Blackbird, Meadow Larks (many), Brewer Blackbird, Linnets, Willow Goldfinch, Brown Towhee, Cliff Swallow, Barn Swallow, Shrike, Yellow Warbler, W. Bluebird. Reached Los Banos about 10:30 p.m. May 27. Arose at 5:00 a.m. Got into marshes by 6. First stop less than a mile from Los Banos, B. Orioles and Kingbirds (atk.) in shade trees. In overflowed land, Black-nicked Stilts (cir. 15) Black Terns (cir. 25) one nest with two eggs, on small platform in water about a foot deep. I think the alarm notes of this cpair brought the birds from some distance. Saw also near open water: Forest Terns and a few Green-winged Teal; also Red-winged and Brewer Blackbirds. A few Glossy Ibises flew in from the east and a St. Blue Heron was seen in the distance. As we drove on toward Merced many Burrow- ing Owls were seen, some with young. Also a Bittern. We soon stopped again where the fields were under water and walked some distance - Many stilts came to meet us, also Black Terns.