Inverness Research studied the American Museum of Natural History's (AMNH) Seminars on Science program for eight years, from its inception in 1998 to 2006. This paper presents teacher survey ratings for "The Link between Dinosaurs and Birds", along with profiles of three teachers who took the course. Course takers report on the annual follow-up surveys that "The Link Between Dinosaurs and Birds" has benefited them personally and professionally, and they rate the course highly. However, compared to educators who have taken other AMNH online courses, a smaller percentage of teachers who have taken this course report that their students have also profited or that they have recommended the course to colleagues. The findings based on the responses of the 39 learners from 11 states who have completed follow-up surveys about the quality and value of the course are presented. The majority of survey takers (74%) are K-12 teachers, but informal science educators and preservice teachers have also provided feedback about how the courses have benefited them personally and as educators. (Contains 3 footnotes.)