Western Hudson Bay polar bears on their way offshore to hunt seals: freeze-up has begun
Posted on November 30, 2023
Official confirmation has come in this morning that polar bears that have spent the summer fasting along Western Hudson Bay now have enough ice to move offshore. That makes this year a bit later than usual (average is 16 November) but is not one of the extremely late freeze-ups, as happened in 1981, 2016 and 2021 when bears didn’t leave until the first week of December (Castro de la Guardia et al. 2017; Miller et al. 2022). Since breakup of sea ice came earlier than usual this summer, this means (as of 30 November) many bears will have been off the ice and without food for 166 days or 5.5 months.
However, so far, there have been no reports from this region of incidents of cannibalism, starving bears found wandering the landscape like zombies, or desperate attacks on people that polar bear specialists have warned us to expect (Abrahms et al. 2023; Stirling and Derocher 2012; Wilder et al. 2017).
Tracking WH Bears
Courtesy Andrew Derocher, University of Alberta, who monitors WH bears:
Close-up of the tracking map below. Note that pregnant females will stay ashore to give birth so not all of these tagged bears are expected to head onto the ice this fall to hunt for seals:
https://polarbearscience.com/2023/11/30/western-hudson-bay-polar-bears-on-their-way-offshore-to-hunt-seals-freeze-up-has-begun/
