Tranquill is a bird-like Pokémon that is light gray, gray, and black in color; interestingly enough, the majority of its colouring is the inverse of its prevolution's coloring. Its beak and eye colour is yellow and the pink cere from its prevolution has brightened into a hot pink, enlarged and became a marking above the eyes. It has a black, crest-like arrangement of two feathers on its head and has also gained a petal-like arrangement of feathers on the back of its neck. It possesses a long rectrice feather that is tipped in black.