Confirm Brewer's Sparrow

[Clip]

Hi All,

This little guy showed up in my backyard this morning in SE Aurora, Colorado. I want to say it is a young Brewer's but I have never seen one in my backyard before. Plus it seemed too small for a sparrow. It seemed more the size of a Siskin. Thanks for the help.  https://imgur.com/a/it4xn2n

 

[psweet]

This looks like a molting adult Chipping Sparrow. The molt in the wings is too extensive for a youngster, and the dark eye-line extending to the lores and the faint malar are wrong for Brewer's.

[Tony Leukering]

This is a molting young-of-the-year Chipping Sparrow -- streaks are visible on the bird's left side.

[psweet]

Does the post-juvenile molt include the remiges, or am I misinterpreting what appears to be molt in the primaries?

[Tony Leukering]

On 9/19/2018 at 7:45 PM, psweet said:

Does the post-juvenile molt include the remiges, or am I misinterpreting what appears to be molt in the primaries?

No, the preformative molt typically does not include remiges.  However, I don't see any strong suggestion of active wing molt in the bird.