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Re: [SBB] American Dipper in Stevens Creek



In a message dated 3/3/05 4:14:04 PM Pacific Standard Time, [[email protected]] 
writes:

> They may be 
> difficult to locate in winter because they are believed to move higher 
> into their drainage in winter. Or, maybe they aren't looked for much in 
> winter and are under-reported.
> 

FWIW, I believe that a significant portion of the dippers that nest or are 
reared in the Santa Cruz Mountains go elsewhere by late summer. Some are 
apparently year-round residents, but my take on the population as a whole is that 
many depart from some streams entirely or from large parts of streams when stream 
flow conditions deteriorate by sometime in the summer. There are very few of 
our local streams that provide suitable dipper habitat in late summer and 
early fall. Without trying to lay out the case for this opinion, I'll just say it 
is based on observations on a number of the local dipper streams at various 
seasons, and especially during a transition period that spans the nesting season 
into summer. But if I'm right that some depart, I wonder where they go?

David Suddjian
Capitola, CA
[[email protected]]
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