Wasp mums use remarkable memory when feeding offspring

Digger wasps make a short burrow for each egg, stocking it with food and returning a few days later to provide more.

The study reveals that mother wasps can remember the locations of up to nine separate nests at once, rarely making mistakes despite the fact nests are dug in bare sand containing hundreds belonging to other females.

Mothers feed their young in age order, adjusting the order if one…