In Studie eines Tukans (Pfefferfresser), the viewer is greeted by a striking portrayal of a toucan. The vibrant colors of the bird's feathers, particularly the yellows, greens, and reds, stand out against a muted background. The detailed rendering highlights the unique features of the toucan, including its large, colorful beak.

The setting appears to be a natural environment, emphasizing the bird's exotic nature. The painting is executed in oil on canvas, showcasing Keller's skill in capturing the intricate details of the toucan. The brushwork is precise, allowing for a realistic representation of the bird's plumage. The composition is balanced, drawing the viewer's eye directly to the toucan.

The dimensions are approximately 50 x 70 cm, making it a medium-sized artwork. Ferdinand Keller was a German painter known for his animal studies, particularly birds. This work reflects the realism style that was prevalent in the late 19th century. An interesting fact about this painting is that it was likely created during a time when interest in natural history and ornithology was growing in Europe.

Keller's attention to detail in this piece exemplifies his dedication to accurately portraying wildlife.