While doing so he noticed strange interactions between two males, Hugin, a subordinate bird, and Munin, a dominant one.

ECONOMIST: Now, it seems, even the bird-brained have theories of mind

Munin followed, whereupon Hugin returned to the loaded containers and ate his fill.

ECONOMIST: Now, it seems, even the bird-brained have theories of mind

As soon as Munin bullied him, he headed over to a set of empty containers, prised the lids off them enthusiastically, and pretended to eat.

ECONOMIST: Now, it seems, even the bird-brained have theories of mind

However, he never managed to gulp down more than a few pieces of the reward before the dominant raven, Munin, was hustling him on his way.

ECONOMIST: Now, it seems, even the bird-brained have theories of mind

But Hugin, he is convinced, was clearly misleading Munin.

ECONOMIST: Now, it seems, even the bird-brained have theories of mind

As it happened, Munin was no dummy either.

ECONOMIST: Now, it seems, even the bird-brained have theories of mind