I posted this to the Facebook group, but no definite answers there yet. The bird was yellow on breast and belly (no white or buff). White wing bars. Slightly smaller than adult Bullock's Oriole.
Sorry for the bad lighting conditions in the photo. This is one of the clearer pictures, but I can try and post more if necessary.
This bird was at The Rocky Mountain Arsenal Wildlife Refuge, Adams County, August 24th. Could it really be a female Hooded or Orchard Oriole?
Susan R., Thornton, Adams Co.