I have two slings of this species, hoping for a female (fingers crossed). But they grow so slow.
I got a freebie B. vagans sling of the same size and around the same time. The vagans is easily 4 times the size of my albiceps slings.
@SonsofArachne Yes, painfully slow! I keep thinking this girl will molt soon, but then she'll break her fast and eat something. The good thing is she's very calm and doesn't kick hairs like my male albiceps loves to do.