When working with teeny, tiny bones, the worst thing imaginable is losing track of which jaw belongs with which skull. For this reason, a specimen number is written on every bone possible. This means a lot of incredibly delicate work for some of UMMZ’s volunteers, who use a steady hand, a very thin pen, and some excellent penmanship to keep every bone sorted properly.
This Tawny Owl (Strix aluco) must have been difficult to label. Just look at those skull sections! Some of the surfaces aren’t much wider than a needle.