Possible Plumbeous Vireo at MTRP Santee 03/22/2020
I say possible because I am not sure. It did not sound off. But it was a overall gray vireo with spectacles. Multiple photos on eBird report but not confirmed yet. But I believe it is a good possibility.
Found in a small tree surrounded by bushes just north of a sign that says 8212 Mesa Road just where Mesa Road turns into a dirt road. I also heard a Cactus Wren in that same area.
Source: SanDiegoRegionBirding Latest Reports