[EBB Sightings] Help with Quail id, please -- could it be Gambel's?

Robb and I went out cycling at Arrowhead Marsh this afternoon.  In addition to three very feisty and vocal California Clapper Rails, and many of the Usual Suspects, we saw a covey of quail.

Now, that would be weird enough, considering how urbanized this location is.

But when I got home, and uploaded the photos and compared them to my books, I'm left with a lot of doubt about the identification of this bird.  (This, sadly, is not unusual for me.)

I've posted photos of the male and one of the females, as well as a single egg that was laying on the ground on my blog (address below).  What I'm seeing that confuses me is 

1. the range map
2. the really shocking red hair-do on Mister Quail
3. the relatively plain belly, with the dark blotch

Can anyone give me some clues about what we saw?  

Lisa Lazar
Oakland

http://howsrobb.blogspot.com/2009/05/whats-that-quail-robert.html