Canada and the United States share 30 endangered or threatened species. This paper examines the recovery process for species at risk under the two country's domestic laws: Canada's Species at Risk Act and the American Endangered Species Act. These two countries could be working together to recover shared species, especially migratory and cross-border species. Through comparing the recovery strategies and plans for the 30 species, and interviewing recovery team members on both sides of the border, it is shown that cross-border collaboration is limited. The paper argues that more collaboration, data sharing, and cross-border recovery teams are needed. Biodiversity loss is an increasing problem in both countries. [ABSTRACT FROM AUTHOR]