And in August, high in air, the beautiful and bountiful horse-chestnuts, candelabra-wise, proffer the passer-by their tapering upright cones of congregated blossoms.
When triggered by overcrowding, they literally transform themselves – changing from green to brown, eating more, getting muscular, mating more, and congregating in crowds.
A large crowd of frightened-looking witches and wizards was congregated there, and when they saw Mr. Weasley coming toward them, many of them surged forward.