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University of California Publications in Zoology [Vol. 21 



Most California specimens of simiosa come from inland points. 

 There is evidently very little travel immediately along the coast, and 

 only a small proportion of the birds winters in the coastal region. 



Fig. T. Map showing stations of occurrence of Passerella iliaca sinuosa in 

 California, as established by specimens examined by the author. The regions 

 enclosed within the dotted outlines are believed to comprise the main winter 

 habitat of the subspecies. The stations outside these areas are points where the 

 specimens of sinuosa taken were migrants, or, if Avinter visitants, where they 

 formed but a small percentage of the total Passerella population. 



From Humboldt Bay there are two or three migrating individuals 

 and no midwinter birds; from Marin County, six winter specimens 

 out of a total of 63 Passerellas, and one or two additional migrating 



