Bob Power <rcpower@...>


This may or may not be helpful, from PRBO's species account (yes, I know -- Pt. Blue).

Departure date from breeding grounds: According to McCaskie (1988), departs Coast and Mountain regions late August through October. PRBO banding data for Marin County (1996 and 1997) -- latest capture dates October 16, 1996 and October 4, 1997.
Spring and Fall migration period: While SWTH is rare in Interior and Basin regions during the summer months, abundance peaks in Spring (April through May) and Fall (August through September) in these regions (McCaskie 1988) -- possibly indicating peak of Spring and Fall migration period in California.

And at the same time, we're on the front end of Hermit Thrush arrival dates.

Best regards,

Bob Power
Oakland, CA

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