We found a statistically significant difference in output between researchers at the Serbian public universities and Serbian academic migrants. On average, a migrant will publish 2.3 papers more per year than their Serbian counterpart. Additionally, we found a statistically significant increase in the publishing record of domestic scientists who collaborate with foreign scientists. On average, more collaborative authors publish 1.9 papers per year more than less collaborative authors. All Serbian scientists are ranked by the percent of papers coauthored with foreign authors. The scientists in the top 50% of the list are “more collaborative,” and the rest are “less collaborative.” The results are presented in the figure below.