[EBB Sightings] Some Contra Costa Birding

Folks:

Yesterday, 4/5/07, I did some birding in Contra Costa County, before 
giving a presentation to the Mt. Diablo Audubon Society in the 
evening.  I walked a ways up Mitchell Canyon in the morning and found 
the typical mixture of early April returning birds and remaining 
winterers.  A singing male BLACK-THROATED GRAY WARBLER seemed 
slightly early to me, but I note one was found in Pine Canyon on the 
much earlier date of 23 Mar.  Later in the day, at McNabney Marsh, 
there was GREATER WHITE-FRONTED GOOSE grazing with the resident 
Canadas on the east side.  Also on the east side, there was a 
convention of the local GREAT-TAILED GRACKLES and I counted 13 
together beside the road.  I estimated about 17 for the marsh.

Bill