Need help with Savannah Sparrow subsp. - So. Cal. (1 Viewer)

I need help distinguishing among the different Savannah Sparrow subspecies. The illustrations in the guidebooks aren't great, and I haven't been able to find good side-by-side photo comparisons of the different subspecies online.

Photos 1 & 2: Taken at Ormond Beach near Oxnard, CA during summer. Are these both Belding's? I was thinking this because of the relatively dark color and just the fact they were present during the summer.

Photo 3: Taken at a jetty in Marina del Rey in January. Any thoughts?

Not sure about subspecies, but I would lean towards juvenile Song Sparrow for photo 1. Heavy gray bill with a curved culmen is better for that species. Compare: http://www.flickr.com/photos/zuikosan/sets/72157606007009697/detail/ 3 is certainly Savannah, but 2 looks like another juvenile and I'm uncertain about the species ID.

Jim

Agree with Jim on Savannah for last one, but no opinion on first two.