Through a survey of more than 200 US academic science librarians, we investigated the perceived value of subject specialization; looked for trends toward or away from science subject specialization; and analyzed predictions about the future of science liaison librarianship. Results showed that science librarians perceive subject specialization positively and predict it will continue to be necessary in the future. They also perceive that liaison relationships will remain crucial. While functional roles appear to be growing, they were not seen as replacing traditional subject responsibilities. Results suggest a shift toward a more generalist approach; however, additional research is needed before stating this conclusively.