The bird carvings are among the most artistically compelling objects from the burial.

The birds — their species, if identifiable at all, is a matter of some debate among researchers who have studied the pieces — were carved with attention to the essential features of avian anatomy: the overall body form, the head, the beak, the suggestion of wings.

They are not photorealistic — no prehistoric carved bird is — but they are recognizably birds in a way that demonstrates the maker’s familiarity with and attention to actual avian forms.

These objects survive because they were made from materials — ivory, bone — that are more durable than most organic materials.