Re: Wilson's warblers on Rosemary
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I suspect you're probably seeing Lesser or American Goldfinches. They too are small yellowish birds with black caps.
They likelihood of seeing "3 (or more)"!! Wilson's Warblers in Northern California mid-winter is extremely low and I dare say unheard of.
Even when this species is moving through at peak migration (April-May and again August-September) seeing multiple birds together away from good habitat is unusual in the City.
On Jan 15, 2020, at 10:33, Barbara London via Groups.Io <sfcraig2005@...> wrote: