[EBB Sightings] Roadrunner on Mt. Diablo

Dear Jimm and EBB,

Steve can fill in local details, but a few years ago he was of the opinion 
that Greater Roadrunner was extirpated from Contra Costa County.  There are 
egg records as recently as 2 May 1904 from Mt. Diablo (Homer A. Snow; CAS 
#4732).  A few birds hang on in Napa County, but it appears to be gone from 
Sonoma County.  It is clearly extirpated from Marin and San Mateo counties, 
where it formerly bred.  It was found in Alameda and Santa Clara counties 
during their respective atlases, but in the latter atlas, to our 
embarrassment, we never confirmed breeding.  I don't know the status in the 
Sacramento Valley, but I assume it still breeds there to the north end of 
the valley as described by Small (1994).

Bill

2 May 1904      5 eggs, Mt. Diablo, CC (Homer A. Snow; CAS #4738)

At 07:10 PM 5/21/05, jimm edgar wrote:
>This is a little after the fact, but on May 11, I lead a field trip to Mt. 
>Diablo for MDAS. Just above Blue Oak while walking the road out to Green 
>Valley ranch, Jean Richmond and I distinctly heard a Roadrunner call from 
>down the mountain below us. Has anyone seen Roadrunner on Mt. Diablo? What 
>is the northern edge of their range?
>Jimm Edgar