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For nearly 40 years, Dr. Ellen Ketterson and her research team from Indiana University have been studying juncos in the mountain forests of Virginia. This segment introduces viewers to the junco, the researchers, and the core methods they use to study birds. Set in field, lab, and aviary locations, one landmark study is highlighted in detail: a long-term field experiment investigating the complex effects of the hormone testosterone on behavior, physiology, and evolutionary fitness.

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Ratings: IMDB: 0.0/10
Released: December 1, 2012
Runtime: 19 min
Genres: Documentary Adventure Short
Cast: Yael Ksander
Crew: Steve Burns Jonathan Atwell

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