This morning I ran this month's Lost Slough bird survey at the Cosumnes River Preserve in southern Sacramento County. The weather was great, the season quite advanced over when I last saw it 18 or so days ago, but the bird species mix little different. Before I left I noticed that only Bullock's orioles had arrived. A few other passerines were noted (by me) for the first time this season today: ash-throated flycatcher, western kingbird and Wilson's warbler. This last one was only 15-20 meters from where I turned one up in January, so it might have wintered locally. The one shorebird of note was a solitary sandpiper. Other birds that interested me for their infrequent detection on this survey included a white-tailed kite, a merlin, and four great-tailed grackles.
