Tags » White-crowned Sparrow

FACING THE SUN

It was a cold but clear morning at Silver Falls when I went to a vacant campsite with perfect birding design, unintentional for sure.  There was a small stream running on the east side of a clearing, then the western edge was the face of a mature forest.  330 more words

Birds

Genes to Cell Lineage

How microRNAs regulate molecular networks to coordinate the multitude of processes of adult neurogenesis

Modified BMC Genomics Abstract:

The addition of adult-born neurons into functional circuits requires precise spatiotemporal coordination across molecular networks regulating a wide array of processes, including cell proliferation, apoptosis, neurotrophin signaling, and electrical activity. 154 more words

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Ontogeny and Patterning

Dynamics between neuronal birth, addition, and survival as the song circuit grows to breeding state

Gambel’s white-crowned sparrow is capable of adding more than 68,000 neurons to HVC within four days of transition to breeding conditions. 410 more words

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Circuit Plasticity

Natural neuronal death prompts reactive adult neurogenesis

Neuronal birth and death are tightly coordinated to establish and maintain properly functioning neural circuits. Disruption of the equilibrium between neuronal birth and death following brain injury or insult often induces reactive neurogenesis. 122 more words

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Organismal Behavior

How seemingly stereotyped song changes in a daily fashion

The ability to learn and perform complex motor skills has been shown across species to depend on time of day. 235 more words

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More Denali Wildlife

We enjoyed lots of wildlife watching while in Denali. Here are a few of the smaller animals.

Wilson’s Warbler. This tiny bird weighs a quarter of an ounce and migrates from Mexico and Central America to Alaska. 50 more words

Alaska

Receiving Line

Dad brought Junior down to the Foggy Bottoms Resort and Spa to bathe and greet the Face of Everyman.  This ritual and common courtesy soon gets out of hand.  25 more words

White-crowned Sparrow