The infants clearly get so much benefit from each other's company. Though there's been a boom of infants in recent years (especially females); it's worth noting that Monarto is currently the only facility with three pre-reproductive females (Zuri - 2012; Hope - 2019; and Zola - 2019). This would make this cohort an ideal choice for transfer a decade from now, as they will have each other for support - and are from two different genetic lines. They would be a valuable addition to either Hamilton or Wellington's troops, who will be in need of fresh imports around that time.