Scott Dietrich and I birded the eastern-most part of Mammoth SVRA, parking off Foresthill Road, where we found a cooperative Bell’s Sparrow.  I’ll copy the link here which will include the eBird map of where we were.  It was located to the left of the trail, just as we entered a large patch of chemise chaparral, past the green gate.  

Good birding,

Craig Swolgaard

Georgetown, CA