It's been suggested in fact that jays, corvids known for stealing each other's food, may hide their food precisely because they are projecting their own tendency to steal onto other jays.

事实上，有研究表明，以偷别人食物而闻名的鸦科动物会隐藏自己的食物，正是因为它们把自己偷东西的倾向投射到其他鸦类身上。