Domitian turned when he heard his son say pa, and was entirely caught off guard by the feather. For good luck, Nico had said. He didn't recognize it, but that meant very little. Nicodemus liked birds, Dom knew that, and his knowledge on the subject had long since outstripped his father's. Domitian's knowledge of birds was limited to being able to identify a few different types of owls and the various assortment of game birds he occasionally hunted. The blue feather was unlikely to have come from any owl or game bird.

He was entirely unsure what to do in response to this. For a moment he merely looked at the feather, considering.

"Have you done something to it?" he asked eventually, meaning some sort of charm or other spellwork. He'd just said he was doing well in charms, but Domitian didn't remember whether good luck charms were something third year students learned or not. "Or is its value only sentimental?"