help with Empid ID Rios Trailhead at San Elijo Lagoon, 4/14/2020 8am

Hi
Please see my ebird report for description and photos.
https://ebird.org/checklist/S67287402

Small empid mostly gray, with strong wingbars on black wings. White edges to secondaries. Notched tail with white outer edges, I did not note tail pumping. Back appears to have some hint of green, but may also be due to reflection from vegetation. Large head, weak complete eyering. A little pale area on face between eye and bill. Could not discern whether bill was bicolored or just black. Photos appear to show all black. Did not call.

I saw 3 pacific slope flycatchers and a probable willow flycatcher in the same area (poor views of a brown Empid with brownish wing bars). This guy was noticeably grayer than the Ps-fly's.

Any IDs and pointers for what to look for in future are much appreciated.
Steve Perry
Solana Beach

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Steve Perry
Solana Beach, CA
Source: SanDiegoRegionBirding Latest Reports