May 21, Berkeley. The Lutescent Warblers which are nesting below the clothes reel terrace are busy feeding young and excited over the gays. May 22. Boulder Creek. Summer day - Tanager seen. no Hermit Thrush heard. Yellow Warblers arrived at last and driving off third parties. A new pair of Olive-sided Flycatchers - the male gives a two syllabled loud call that sounds like a boy whistling to his dog; gives the usual call immediately afterward. Lutescent, Pileated and Black-throated Gray Warblers still singing, but less frequently than last week. First birds at dawn, Rd. Thrush, Olive-sided Flycatcher, Western Flycatcher and Warblers. Vireos and Warblers much later. Several conflicts between Cassin Vireos and Coast Jay. May 24. I saw many Bonaparte Gulls along the off-shore highway - approach to the bridge. May 28. A family of Lutescent Warblers near the pool. May 29. I heard Robins at Ben Lomond. Cloudy- May 31. A robin was singing at our Boulder Creek place, Grosbeaks and Tanagers also. Lutescent Warblers are singing constantly again. (First brood raised, second beginning?) Black-throated Gray Warblers still singing and a Chipping Sparrow near by. No Kilton Vireos anywhere this spring. On the way home we stopped at Mt. View Marsh to see if there were any waders. Kildeer were the only birds seen. At Dunn Bridge 3 Cassian Terros. Very brame. Nothing else. Swallows, Birds.