Sawyer, H., J. Merkle, A. Middleton, S. Dwinnell, and K. Monteith. 2018. Migratory plasticity is not ubiquitous among large herbivores. Journal of Animal Ecology. In Press. Data files include: 1) A folder with 99% utilization distribution (UD) contours estimated from brownian bridge movement models. File names reference the study area (e.g., Atlantic Rim North), animal id (e.g., 17), and season (sp=spring, fa=autumn), followed by year (e.g., 05). For example, AtlanticRimNorth_16_fa05.img is file for Deer#16 from Atlantic Rim North study area during the fall 2005 migration period. UDs for all migratory animals are included, so that fidelity analysis can be replicated. 2) A shapefile (migration_point_data.shp) that contains all the point data (i.e., gps migration sequences) for migratory animals. Attributes include study area, x coord, y coord, season, year, and animal id. 3) A spreadsheet (age_database) showing ages of marked deer from various study areas. 4) A spreadsheet (recruitment_database) showing December recruitment status (i.e., number of fawns) for deer from various study areas.