Charlie Sullivan is 31 years old and has been a tattoo artist at the Golden Goose studio in Birmingham for ten years. While most of his colleagues have developed their recognizable style in one genre over the years, Charlie has focused on something more niche and, by his own admission, obsessive – birds. He started drawing as a child, and at the same time became interested in birdwatching, and at some point, these two hobbies merged into one large-scale personal project: to tattoo all the bird species that naturally inhabit Great Britain.