OK, so I'm getting him a snack. Cheese and Biscuits. There's a feather on the floor in the kitchen. I swear, I do not know how it got inside. Probably on Jak's coat at some stage. Anyway, he's fascinated by this tiny little fluffy feather. He's down on his hands and knees examining it, watching it float from one place to the next. Totally absorbed.
"Yes", I say. "It's a feather. Birds have feathers. You know, like you have hair."
He touches his hair. Yes, he's understood.
"Anyway", I say "Would you like a piece of cheese?" Yes, he nods, and reaches out an eager fist.
I give him a piece of cheese and turn away, busy with my chores. Only to turn back a moment later and see him, again on hands and knees, cheek to the tiles, "feeding" his cheese to the feather: "num num num".