Black-headed Grosbeak, Pheucticus melanocephalus
Black-headed Grosbeak, male, 6/4/07, Hidden Villa, Los Altos Hills
Black-headed Grosbeak, female, 6/4/07, Hidden Villa, Los Altos Hills
Black-headed Grosbeak, male, 5/15/08, Galileo Hill, Kern Co
Black-headed Grosbeak, female, 5/29/08, my yard, Stanford campus
These two "female/immature" plumaged birds visited my back yard -- I think the more worn feathers on the one above makes it an adult female, whereas the one below, with less wear on tips and linings of feathers, looks to be a juvenile.
Black-headed Grosbeak, juvenile, 7/12/08, my yard, Stanford campus
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