March 20 Vicinity of San Diego, San Diego Co., Calif. spend the Aft. at San Diego State then went with Guy McCaskie in th afternoon to look at birds. We went to La Tijuanan River Valley, where we were unable to find much. Migrant Rufous hummingbirds are present in holes, almost to the exclusion of all other species; must be col. Ps: It may or with sp. I suppose. However, in spite of the Ps saw no aerial display: They chase a lot but don't seem to be as attached to any one spot as at Tuleas Park. Saw Anna's here; no Black Chin or Corlis. & no display. Guy says the lories are through nesting and the Black Chins don't come in until April. Saw migrant Barlock's Orioles at one of the ranches an mins. Golden Eagle along th cliffs, a Western Kingbird, 2 Wilson's Warblers, a Clipping Sparrow and hordes of Lincoln Sparrows. Then was a Snow Goose with some teal at a pond here. We then went to the Sewage Plant near Brown Field, where we saw in the #s of White-Crown & lincoln Sparrows an mins. White-throated Sparrows and a Swamp Sparrow, which Guy had been seeing since January. It was Rufous on the back, guy unmarked on the breast, the pattern like a Lincoln Sparrow, and shy as all get out. We went back to Imperial Beach where we found a few Royal Terns with a group of Corspiaro, and saw both Sage Virenia, and Clapper Rails.