Average percentage of time (min) spent on different activities by territorial Blue-black Grassquit males that nested in central Brazil and those that were unsuccessful in nesting, during 30-min observation bouts conducted every 15 days. Seven observation bouts were conducted for reproductive males and 11 for nonreproductive males. Absence means the male was absent from his territory, Ground means the male was on the ground below vegetation, and Confrontation means the male was chasing or fighting with another individual. The U and associated P-values reflect Mann-Whitney U-tests