Long tailed bird in San Carlos

I’m unsure of ID for bird I saw this morning (8/20), about 9:30am, in my San Carlos neighborhood, a few blocks east of Lake Murray.   The bird landed on telephone wire, only stayed less than a minute, Before it flew west.  Lighting was poor.

Small bird, (smaller than a scissor-tailed flycatcher), tail twice as long as body.  White patches on dark wings when flew.  Undulating flight.  I could not see body color, or beak shape.

I’m wondering if anyone has seen the likes in area?  Posibly a Whydah?  I see female Pin-tailed Whydah reported for Lake Murray in March 2020.

Nancy Stalnaker
San Carlos neighborhood, San Diego

Source: SanDiegoRegionBirding Latest Reports