What does really happen between the moment when a scientist is observing a bird in the wild and publishing a scientific chart? Jana Thierfelder reveals the hidden life of field science through the 30-year archive of biologist Michael Griesser’s work with Siberian jays in Sweden. Blending design, anthropology, and science studies, it uncovers the sketches, notes, tools, and sensory practices behind scientific knowledge. By tracing how scientific observation becomes publication, it shows that science is not just objective output – but lived, embodied, and relational work. It is about the people, places, and processes that shape knowledge. A call for more open, transdisciplinary approaches to how we understand and share science.