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Swallows? Orange County, California (1 Viewer)

Common Raven

Well-known member
Saw these groups of probable swallows that I need help with. Size, behavior were all swallow; I would guess Northern-rough Wings but the yellowish hue near vents is confusing me. It was clearly visible in the field and not photo artifacts.

As always, thank you for your time.
 

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Saw these groups of probable swallows that I need help with. Size, behavior were all swallow; I would guess Northern-rough Wings but the yellowish hue near vents is confusing me. It was clearly visible in the field and not photo artifacts.

As always, thank you for your time.

Cannot see anything but normal looking NRWS there. Perhaps juveniles show a bit if a yellowish wash.
 
Looking good for Northern Rough-winged Swallow for me as well. Could it be an artifact from sunshine?
 
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