Professor Grubbly-Plank stuck her pipe firmly between her teeth and took Hedwig from Harry while Professor McGonagall watched.
“Hmm,” said Professor Grubbly-Plank, her pipe waggling slightly as she talked. “Looks like something’s attacked her. Can’t think what would have done it, though. Thestrals will sometimes go for birds, of course, but Hagrid’s got the Hogwarts Thestrals well-trained not to touch owls.”
Harry neither knew nor cared what Thestrals were; he just wanted to know that Hedwig was going to be all right. Professor McGonagall, however, looked sharply at Harry and said, “Do you know how far this owl’s travelled, Potter?”
“Er,” said Harry. “From London, I think.”
He met her eyes briefly and knew, by the way her eyebrows had joined in the middle, that she understood “London” to mean “number twelve, Grimmauld Place.”
Professor Grubbly-Plank pulled a monocle out of the inside of her robes and screwed it into her eye, to examine Hedwig’s wing closely. “I should be able to sort this out if you leave her with me, Potter,” she said, “she shouldn’t be flying long distances for a few days, in any case.”
“Er—right—thanks,” said Harry, just as the bell rang for break.
“No problem,” said Professor Grubbly-Plank gruffly, turning back into the staff room.
“Just a moment, Wilhelmina!” said Professor McGonagall. “Potter’s letter!”
“Oh yeah!” said Harry, who had momentarily forgotten the scroll tied to Hedwig’s leg. Professor Grubbly-Plank handed it over and then disappeared into the staff room carrying Hedwig, who was staring at Harry as though unable to believe he would give her away like this. Feeling slightly guilty, he turned to go, but Professor McGonagall called him back.
“Potter!”
“Yes, Professor?”
She glanced up and down the corridor; there were students coming from both directions.
“Bear in mind,” she said quickly and quietly, her eyes on the scroll in his hand, “that channels of communication in and out of Hogwarts may be being watched, won’t you?”
“I—” said Harry, but the flood of students rolling along the corridor was almost upon him. Professor McGonagall gave him a curt nod and retreated into the staff room, leaving Harry to be swept out into the courtyard with the crowd. He spotted Ron and Hermione already standing in a sheltered corner, their cloak collars turned up against the wind. Harry slit open the scroll as he hurried towards them and found five words in Sirius’s handwriting:
...
Today, same time, same place.
“Is Hedwig OK?” asked Hermione anxiously, the moment he was within earshot.
“Where did you take her?” asked Ron.
“To Grubbly-Plank,” said Harry. “And I met McGonagall… listen…”