Prominent white eye arcs, broken by the dark line through the eye on the Chipping Sparrow on the left
and the "open faced" look on the Clay-colored Sparrow from the lack of the eye arcs and dark eye line on the right.
"Click" on any image for a larger photo..
I've always had a hard time with Chipping Sparrows that are a bit paler than the norm but this field mark should help with that! Thanks very much for pointing it out David!
Here's both birds as seen in the field. Chipping Sparrow, Salisbury Beach SR - Oct. 17, 2011
Clay-colored Sparrow - Wardens, Parker River NWR - May 14, 2011
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