Noctowl looks much like a 'normal' owl, with a brown coloring and a triangle pattern of a darker shade of brown running down its chest. Its wings and wedge-shaped tail are dark brown like the pattern on its chest, although the underside of its wings is the same light brown as most of its body. 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 in coloration, and Noctowl's beak and the nails of its talons are light pink. Additionally, Noctowl's irises are red.
Noctowl are nocturnal Pokémon. They have exceptional hearing and eyesight, can fly silently, and can turn their heads at a 180° angle to increase their intellect.
When they need to think, they rotate their head 180 degrees to sharpen their intellectual power. This resembles the action of a real owl observing its surroundings. They also silently sneak up on prey without being detected.
Noctowl normally only come out at night. They tend to make their nests in the trees of forests.
Judging from its entry in Pokémon Crystal and its sharp talons, Noctowl is likely a predatory Pokémon.
This Pokémon was unavailable prior to Generation I.