migration

11:00am

Tue April 2, 2013
-Nature of Things

Winter Bluebirds

John Weeks discusses bluebirds and other thrushes that may remain in the area during the winter months as long as a food source is available.

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11:00am

Tue March 12, 2013
-Nature of Things

What is so Rare As a Mild Day in March?

John Weeks discusses the arrival of various bird species beginning in late February and continuing through the spring months. Migration timetables are rarely disrupted by fickle March weather.

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8:00am

Fri October 12, 2012
-Nature of Things

Outside Influences

John Weeks discusses the influence of the moon on bird migration and reproduction. He explains how day length have been demonstrated to trigger reproductive cycles and stimulate hormone production.

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11:00am

Tue October 9, 2012
-Nature of Things

Dedications and Spectacles in Nature

John Weeks talks about the parallel between the operation of a wild thing and the function of a computer chip. Weeks makes the point that in both cases, a lot of what happens may be the result of stored messages or directives, as in the case of bird migration.

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11:00am

Tue September 25, 2012
-Nature of Things

Mysteries of Sight, Sound and Other Senses

From birds using celestial navigation, to salmon using chemical sensors to "smell" their way home, John Weeks discusses the migration phenomenon of various species. Weeks notes that many migration patterns hold mysteries that are still unexplained.

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