Black placed a hand on either side of the window frame and heaved his head and shoulders out of it. It was very lucky he was so thin. In seconds, he had managed to fling one leg over Buckbeak's back and pull himself onto the Hippogriff behind Hermione.
After that, he had no choice but to turn right around and head back out of the portrait hole again.
¡°Okay,¡± she whispered, ¡°no one there ¡ª cloak on ¡ª¡±