January 11, 2011

Lagoonas

Michael and I took a drive up Bofax road to the top of the ridge within Golden Gate Recreation area. Nice forests and COLD air. Great view of the Bolinas Lagoon and it's delta.

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Everyday

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January 9, 2011

From up in grid 4

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BT

Bushtit
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Here is a good example of a molt limit in a bewick's wren wing. You can see a slight color difference between the shafts of the outer three large feathers (the primaries) and the inner ones. The outer feathers have a dark brown color to them, whereas the inner ones have a light brown color. The darker brown indicates newer feathers. When you can see two generations of feathers in a wing at this time of year, it generally means that this is a first year bird because as an adult it would have undergone a complete molt, and would not show any remaining older feathers.
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January 5, 2011

Towhees

California towee, with a single white feather on its head, which shouldn't be there.
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Spotted towhee
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Spotted towhee wing, showing a typical HY/SY molt pattern: fresh greater and lesser coverts, and tertials (black), and retained juvenile primaries, secondaries, and primary coverts.
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January 3, 2011

RSFL

Good day at Pine Gulch on Michael's first day back. 25 birds with a couple good ones mixed in.

Myrtle warbler tail
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Chestnut backed chickadee
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Red shafted northern flicker
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Anna's hummingbird
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