Dinoucan is a small, bird-like Pokemon with short black feathers and wings. Its most distinguishing feature is its huge beak; the top half is red, green, and blue and the bottom half is orange, and the whole beak is extremely hard. Its chest and face are yellow, while its large eyes are purple. It also has three white spikes on its head, neck, and tail, and three white claws on its wings and yellow scaly feet.
Dinoucan's beak was hard enough to peck through stone, allowing it to use attacks like Peck and the more powerful Drill Peck. It could also fly, but not as well as its evolution; it took off by jumping from a height or running while flapping its wings to get airborne. Its sharp curved claws were also useful for climbing vertical surfaces and attacking prey or enemies.
Dinoucan, along with its evolution, Raptouka, are the only known Pokemon that can learn Grappling Hook via level-up.
Dinoucan appears to be based off a toucan with dinosaur-like aspects. Specifically it is based off of Archaeopteryx, one of the earliest known birds, and the theory that it is an ancestor of bird Pokemon is a reference to Archaeopteryx being an ancestor to real-world birds.