> … they might not understand that a human has to turn its head to see something. I’m pretty sure they understand this well — it’s common knowledge that a swoo

> … they might not understand that a human has to turn its head to see something. I’m pretty sure they understand this well — it’s common knowledge that a swooping magpie will stop attacking if you stare straight at it. (Of course, ‘common knowledge’ isn’t necessarily correct, but a quick search seems to confirm this case.)