Harry was still in his Animagus form as he appeared at his next destination, which allowed him to stay anonymous as he searched the area.
He was at a sinister place. The darkened shadows of the haunting visage he was met with left him struggling not to eradicate the building, and he watched for demons in every corner.
He was in the Dursley house, which only meant that he was helping an alter ego of himself. He cautiously opened the cupboard door with a dextrous flick of his talon, but found nothing but old jackets. He closed it with some small relief, and gently glided upstairs.
One of the benefits of being a Thunderbird was that he could create his own updrafts. A relief, since actually flapping his wings meant creating a thunderstorm wherever he went.
He found the smallest bedroom and slipped inside, the door not having any locks that he could see.
That meant it was before third year, if he was remembering right.
He found black hair huddled under a thin sheet, and gently floated over to it.
The biggest surprise was that there was no bird cage. That meant no Hedwig, which indicated that he either had sent the bird away to someone else, or it wasn't even first year yet.
He gently brushed his wing over the dark hair of his counterpart and hopped back.
Wide green eyes turned to him, opening.
He quickly took in the narrow face and long black hair of... a female Harry Potter.
"Hello?" she called, reaching blearily for a pair of glasses. Harry hopped out of the way lightly, and watched her reach for the broken glass and wire frames.
He waved one of his wings at it, and the glasses reverted to lookimng as if they were brand new.
"Woah!" the girl called after putting on the spectacles. "A bird?"
Harry inwardly found it amusing that as much as he was a bird now, this counterpart was always one.
"My name is Rose, Rose Potter." she introduced herself.
Harry cawed, and the power of his voice shook the room.
"Wow." the girl breathed.
Harry unfurled his wings, all six of them, and allowed her to see his form.
"Six wings? I thought normal birds had two." she remarked, slowly stretching out her hand. She paused. "May I?"
Harry nodded, and the girl reached out and gently ran her hands over his feathers.
"They're so soft." she remarked, surprised.
Harry nodded. His feathers reflected his hair, and he took decent care of it. Sirius usually had a dark shaggy mane because he didn't take decent care of his own hair. Merlin knows how gross Snape's animagus form would be, if he had one. Harry only hoped it was scaly so he didn't have reason to be disgusted.
"You're so smart." she mused, which Harry, of course, nodded to. "What kind of bird are you?"
Harry eyed her mischeviously and beckoned with his head. She seemed to get the message, and got up to follow him. He leapt to the window, and mimed opening it.
This, of course, reminded Rose that she shouldn't have a bird in her room given the closed window, but she opened it anyway.
Harry stared at her, and then at the sky. When the girl was looking, he cawed once. The shrill noise echoed, and the sky replied with a dangerous rumble if its' own.
"Thunder?" she asked, incredulous.
Harry nodded, and repeated the action again. The sky rumbled louder than before, and he preened.
"You can make thunder?" Rose asked.
Harry eyed her and slowly glided into the street. She looked so worried as he did that he made sure that he looked her in the eyes.
His shrill caw was louder, and lightning surged down on him. She gasped, but Harry stood in the lightning, absorbing power from it. It was always exhilerating to him, feeling the power of the thunderstorm flow through him.
He glided back up to the window and Rose noticed his eyes, as green as her own, were shining so brightly that her room looked to be lit up by it.
"Woah." she breathed.
Harry agreed.
"Some kind of Thunder bird." she remarked, and he trilled in a strange way that she recognised after a few momsnts as laughter.
"What?" she asked, annoyed. "Is there something wrong with Thunder bird?"
He shook his head, then nodded.
It took her a few seconds, before she guessed his intent. "You're saying that you are actually called a Thunderbird?" she asked.
Harry nodded again.
"That's cool." she said, before sighing. "You'll probably have to leave though, just like everyone else."
Harry hopped closer and nuzzled her hand with his head.
"You might as well get going now." she moaned sadly.
He nipped her ear.
"Ow." she complained. "What was that for?"
He nuzzled her again, and she hesitantly pet his head. "You aren't going to leave?" she asked. She paused, falling silent for a few minutes. "Will you be my friend?"
In Harry's head, he told her with all the feeling in his heart. "If that is what you wish, then so shall it be."
He nodded, and nuzzled her again.
She pet him happily then.