Blackpoll Warbler, Setophaga striata


Blackpoll Warbler
My only photos of this species to date were taken in Northern California during October ten years apart, 2007 in Monterey County above, and 2017 in my home county of Santa Clara for the three below. These birds are notoriously difficult to identify by age and sex in fall migration, and I haven't tried. 


Blackpoll Warbler
Above, my 2017 non-breeding Blackpoll in sunshine with wings lifted, concealing the wingbars that are one of the prominent field marks of this species. Below, the same bird photographed in shade, with throat and breast looking olive rather than the yellow seen above with the bird in sunlight; the bold wingbars are conspicuous, as is the white undertail. Note the food item in the bird's bill.


Blackpoll Warbler


Blackpoll Warbler
The 2017 bird viewed in profile and out of the sunlight looks a lot like the 2007 bird at the top.