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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Horm Behav. 2013 Oct 17;65(2):179–187. doi: 10.1016/j.yhbeh.2013.10.006

Figure 5.

Figure 5

Relationship between testis mass and individual mean testosterone response to GnRH and LH challenges. Points represent male dark-eyed juncos of the Carolina (filled circles) and white-winged (open circles) subspecies.