It unfailingly catches prey in darkness. Noctowl owe their success to superior vision that allows them to see in minimal light, and to their supple and silent wings.
(From Bulbapedia) Noctowl bears similarity to an owl with brown plumage and has a darker brown triangle pattern of feathers running down its chest. Its wings and wedge-shaped tail are dark brown, while the undersides of its wings are light brown. It has bushy, cream-colored feather 'horns' that look similar to a trident or eyebrows. The ring pattern around its eyes and its talons are cream colored, and Noctowl's beak and talons are light pink. Additionally, Noctowl has large, red eyes. As shown in the anime, Noctowl can grow a small beard in its elderly stages.
Noctowl is a nocturnal Pokémon, and has eyes that can see in pitch-darkness. Called "the emperor of dark nights" by some, it never lets its prey escape. It has exceptional hearing and eyesight, can fly silently, and can turn its heads at a 180° angle to increase its intellect. It can also turn its head upside down, which signals that it is troubled by something. Noctowl is most commonly found nesting in trees and forests. It pecks those who disturb it.