Woolly Mammoth dental enamel from Poland has shown that woolly mammoths were seasonally migratory. Recurring shifts in δ18O and 87Sr/86Sr found in levels of the enamel correspond to seasonal versions and point out that Polish woolly mammoths inhabited southern Poland throughout Wintertime but grazed the Polish midlands during summer season.[59] https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA