His technique involves the precise use of watercolour and gouache on paper. He did not use the thick layers found in oil painting. He used small brushes to define the texture of feathers and the shape of leaves. His compositions are simple. He usually placed one subject against a plain background. This choice prevents distraction and keeps the focus on the specimen. His drawings show a clear understanding of physical form and anatomy.

Modern collectors choose these works for their clarity. The clean lines of his studies work well in minimalist or traditional rooms. His prints provide a sense of order. They do not rely on loud colours or dramatic stories. Instead, they offer a quiet look at nature. These images remain popular for decor because they combine Dutch precision with a clean look. They appeal to those who value the intersection of art and science.