This is a black and white engraving of a bird, likely a peacock or similar large bird, with its tail feathers fully spread. The bird is depicted in profile, facing to the left. **Details:** * **Tail Feathers:** The most prominent feature is the elaborate display of tail feathers, which are densely packed and intricately detailed with numerous lines representing the individual barbs and vanes. The feathers are spread out in a fan-like shape, creating a large, ornate pattern. * **Body and Wings:** The bird's body is relatively small compared to its tail, and its wings are partially visible, folded against its body. The body is also detailed with lines to suggest feathers and contours. * **Head and Beak:** The bird has a long, curved beak and a small head with a crest or tuft of feathers on top. The eye is indicated by a small circle. * **Style:** The engraving is done in a detailed, linear style, with a focus on capturing the texture and form of the bird's feathers. The lines are fine and precise, creating a sense of depth and realism. * **Text:** Above and below the bird illustration is text in an old-style font. The top line reads “De Aui bus” and the bottom is a paragraph of text in Latin. The top left corner has the number “612”. **Overall Impression:** The image is a beautiful and intricate depiction of a bird, likely intended as an illustration for a book or scientific treatise. The level of detail and the artistic style suggest that it was created by a skilled engraver.