B12 Solipsism

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Archive for the ‘bird’ tag

Location of Last Season’s Acorn Woodpecker Party was uploaded to Flickr

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Castle Rock Trail, Walnut Creek, CA.

From Wikipedia:
The breeding pair excavate a nest in a large cavity in a dead tree or a dead part of a tree. A group of adults may participate in nesting activities: field studies have shown that breeding groups range from monogamous pairs to breeding collectives of seven males and three females, plus up to 10 nonbreeding helpers. Young from a single brood have been found with multiple paternity.

Male acorn woodpecker with "granary tree" full of acorns

Acorn hoarded by acorn woodpecker
Food and homes
Acorn woodpeckers, as their name implies, depend heavily on acorns for food. In some parts of their range (e.g., California), the woodpeckers create granaries or "acorn trees" by drilling holes in dead trees, dead branches, telephone poles, and wooden buildings. The woodpeckers then collect acorns and find a hole that is just the right size for the acorn. As acorns dry out, they are moved to smaller holes and granary maintenance requires a significant amount of the bird’s time. They also feed on insects, sap, and fruit.

Defense and storing
The acorns are visible, and the group defends the tree against potential cache robbers like Steller’s jays and western scrub jays. Acorns are such an important resource to the California populations that acorn woodpeckers may nest in the fall to take advantage of the fall acorn crop, a rare behavior in birds.
Acorn woodpeckers can also be seen sallying from tree limbs to catch insects, eating fruit and seeds, and drilling holes to drink sap. The acorn woodpecker will use any human-made structures to store acorns, drilling holes into fence posts, utility poles, buildings, and even automobile radiators. Occasionally the woodpecker will put acorns into places where it cannot get them out. Woodpeckers put 220 kg (490 lb) of acorns into a wooden water tank in Arizona. In parts of its range the acorn woodpecker does not construct a "granary tree", but instead stores acorns in natural holes and cracks in bark. If the stores are eaten, the woodpecker will move to another area, even going from Arizona to Mexico to spend the winter.

more:
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I took Location of Last Season’s Acorn Woodpecker Party on July 01, 2016 at 04:09AM

and processed it in my digital darkroom on July 06, 2016 at 10:11AM

Written by eggplant

July 6th, 2016 at 9:25 am

The Music Kept Playing was uploaded to Flickr

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rooftop, West Loop somewhere (maybe the CTA HQ?)

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I took The Music Kept Playing on August 16, 2012 at 10:36AM

and processed it in my digital darkroom on April 26, 2016 at 04:53PM

Written by eggplant

April 26th, 2016 at 4:35 pm

Indirect Enquiries Added Nothing was uploaded to Flickr

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Harrington Beach State Park, Lake Michigan, near Belgium

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I took Indirect Enquiries Added Nothing on November 21, 2010 at 02:36PM

and processed it in my digital darkroom on August 04, 2015 at 03:25PM

Written by eggplant

August 4th, 2015 at 10:25 am

Across The Evening Sky All The Birds Are Leaving – Polapan Blue was uploaded to Flickr

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fog, S. Michigan Avenue.

Polapan version

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I took Across The Evening Sky All The Birds Are Leaving – Polapan Blue on June 26, 2014 at 07:38PM

and processed it in my digital darkroom on June 27, 2014 at 03:39PM

Written by eggplant

June 28th, 2014 at 8:33 am