Woolly mammoth dental enamel from Poland has shown that woolly mammoths had been seasonally migratory. Recurring shifts in δ18O and 87Sr/86Sr located in layers of the enamel correspond to seasonal versions and point out that Polish woolly mammoths inhabited southern Poland through Winter season but grazed the Polish midlands in https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA