What is in this image? Describe it as if you were explaining it to someone from the 15th century.

In this artwork, you see an illustration quite whimsical in nature. It depicts a creature akin to a large bird, although it bears features exaggerated for the sake of mirth. This bird is depicted as standing upright like a man, a fanciful imagination indeed! The creature wears a cap fitted snugly on its head, reminiscent of a nightcap but more festive, perhaps suggesting it is for warmth during colder times. In one of its flippers, it holds a long, slender board, which could be likened to a slender plank of wood but seems intended for some sort of recreation in the snow, a notion quite imaginative and fitting for tales or folklore. The creature''s posture is jovial and spirited, portraying an air of merriment and readiness for some frolicsome winter activity.