There could be some influence form Glaucous here,but at the same time
I'm not sure there's anythingnecessarily outside the range of an
(early) bleachedGlaucous-winged. For a more secure hybrid candidateit
would be nice to see something like a straighter bill,much more
significant paling of the bill base (the minimal amount here may be
within range for G-won this date), whitish rather than pale brownish
eyearcs, or remnants of internal patterning in the tertials.
Phil