I'd just urge caution. The last photo I saw of a "Black-billed Magpie" in the Central Valley, it was feeding with Yellow-billeds, and it was the SAME size as the Yellow-billed Magpies it was with. More likely a pigment anomaly than a 'vagrant', in that case.
I am not aware of any well-documented records for the CV, but if anyone knows of one, let me know.
Ed Pandolfino
On Wednesday, April 12, 2023 at 03:57:39 PM PDT, Ken Burton wrote:
There are a few "out-of-range" records of both species but it's not a normal occurrence.
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