Coombs-Hahn, Thomas P.Marsh, Regan Hillary2014-09-222026-09-292014-09-222026-09-29199910514http://arks.princeton.edu/ark:/88435/dsp01np193c188https://theses-dissertations.princeton.edu/handle/88435/dsp01np193c188Contains color or special media50 PagesSeasonal Variation in Hypothalamic GnRH and Song Nucleus Size Associated with Photorefractoriness in the American Goldfinch (Carduelis tristis)Princeton University Senior Theses