Lark Sparrow. Escondido, California. February 16, 2014. Greg Gillson.
I can't figure out this bird. Sometimes it is a bird of sage scrub like the Sage Thrasher, found in the Great Basin desert of southeastern Oregon. Sometimes it is a bird of grasslands like the White-crowned Sparrows this bird was with in a graveyard in southern California.
But wherever I find it, it gives the appearance of a large handsome sparrow with a long buzzy song.