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. Author manuscript; available in PMC: 2015 Mar 14.
Published in final edited form as: Neurosci Biobehav Rev. 2014 Jul 31;46(0 4):534–546. doi: 10.1016/j.neubiorev.2014.07.017

Fig. 2.

Fig. 2

Comparison of roll-snaps produced by untreated male Golden-collared manakins (A) and males treated with the peripherally active androgen receptor blocker, bicalutamide (B). Treated males produced roll-snaps composed of less independent snaps and greater time intervals between each snap. Their roll-snaps were also more irregular, i.e. they were more spaced in time at the beginning and reached the typical inter-snap interval only towards the end of the sonation.