[ Subaki looks at his bird then back at Setsuna then back at the bird again. Something isn't adding up here. How does he call through the bird? As much as it pains him to admit that he's ignorant about something, it's also rather apparent the bird has no means of summoning Sakura. ]

...Do you mean I write a letter and send it to her with it tied to the bird's talon?

[ He lifts the bird up, trying to examine it closely, making extra sure he didn't just miss a very important detail when he got here. ]

How would it know where her location is? It's not quite trained for tracking.

[ Or anything really. ]