Male Sturnus unicolor individuals face a choice when it comes to the mating season. They can either invest in parental care, through helping feed the young, provide shelter, etc. and be monogynous or they can control many nests at one time, increase the number of matings they engage in and be polygynous.
Male Sturnus unicolor individuals face a dilemma during mating season. They can choose to invest in parental care, such as feeding and sheltering offspring, and remain monogamous or they can control multiple nests simultaneously, increase the number of mates they engage with, and become polygynous.