Abstract
A population of individually marked H. versicolor was censused every night during the 1975 season to evaluate male breeding success. There was no relationship between breeding success and size of the male or the number of nights a male called. Particular perch sites were especially advantageous calling places. Perches where males amplexed females were surrounded by less vegetation which interfered less with the sound propagation of the mating call. The distribution of non-calling, subordinate males is considered in relation to perch sites and dominant males.

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