What kind of egg is this?

We’re just returning home from a short work/vacation trip in Sonoma and discovered this egg on our upstairs patio.  There doesn’t appear to be any chicks running around from this good sized (2 plus inches) egg.  This is too big to be a baby Barn Swallow.  Any ideas of what this was/is?



  1. herongrrrl says

    Looks like a Glaucous-winged gull (aka seagull) egg.

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