Moreover, considering that 2021 fall ice formation for the Arctic in general is well ahead of 2016 (and every year since, except 2018), it’s hard to see why human-caused global warming caused by ever-increasing CO2 emissions explains the slow freeze-up of Hudson Bay. Timing of Hudson Bay freeze-up has always been highly variable from one year to the next (Castro de la Guardia et al. 2017: Fig. 3, copied below). The average freeze-up date in the 1980s was 16 November ± 5 days, while from 2005-2015 this had shifted about a week to 24 November ± 8 days (Castro de la Guardia et al. 2017:230). This year freeze-up was later than usual but last year and the three years before that the ice froze as early as it did in the 1980s. Cue the zombie apocalypse.
UPDATE 11 December 2021: see chart below from Andrew Derocher on the position of tagged WH bears at 10 December.
Posted onNovember 2, 2021|Comments Off on Polar bear watching in high gear near Churchill as everyone waits for the sea ice to form
All of the bears within view of the coastal web cams on the shore of Wapusk National Park near Churchill on Western Hudson Bay seem to be in very good shape this year, despite having come off the ice a few weeks earlier than they have over the last few years. Despite this, problems with bears in Churchill seem to have been below average this year. Some great action can be seen via several Explore dot org live web cams that are streaming from shore right now.
No ice forming yet along the west coast of Hudson Bay as of today, which is a bit later than it has been for the last few years. That means some of these bears will likely have spent almost 5 months onshore by the time they get back on the newly-formed ice and resume hunting seals.
Posted onOctober 15, 2021|Comments Off on No signs of a climate emergency for W. Hudson Bay polar bears this year ahead of UN climate meeting
I’ve been told that another complete aerial survey of the Western Hudson Bay polar bear subpopulation (from the Nunavut to Ontario boundaries) was conducted in August this year and that the bears have been hanging out further south than usual. It will be years before the results of the population count are published, of course (especially if it’s good news) but my contacts also say virtually all of the bears are in great condition again this year.
Posted onOctober 8, 2021|Comments Off on Churchill problem polar bear reports finally completed and posted online
Although since 2015 at least the Polar Bear Alert Program in Churchill Manitoba usually issued and published its problem bear reports weekly during the ice-free season, this year has been an odd exception. Two reports in early July, then nothing. Yesterday, there was a dump of reports that had been compiled on 1 September and 7 October, according to their metadata.
There are still a few weeks missing, including the two most recent weeks but at least now we have a more complete picture of what’s been going on with problem bears in The Polar Bear Capital of the World that can be compared to previous years. Such reports in various forms go back to the late 1960s, although only those from recent years have been publicly available (Kearney 1989; Towns et al. 2009).
Posted onAugust 22, 2021|Comments Off on Western Hudson Bay fat polar bear video from the shore of Wakusp National Park
Here is a short video from last week on the shore of Wapusk National Park of a fat sow and her fat cub. At this time of year, the Cape Churchill caribou herd (population ca. 3,000) is wandering by with their new calves. Unlike deer, both male and female caribou have antlers. The bears and the caribou simply ignore each other most of the time. Very rarely, a bear will chase one and even more rarely, catch one. However, the bears will scavenge caribou kills made by wolves, which are their primary predator.
Posted onJuly 22, 2021|Comments Off on Western Hudson Bay polar bears: still some out on the sea ice, some causing trouble
As of Monday (19 July), more polar bears had come ashore near Churchill and on the shores of Wakusp National Park but some are still out on the bay. The pattern of ice breakup this year means most bears will come ashore well south of Churchill and make their way north over the summer and fall. There have been two Churchill ‘problem’ bear reports so far but not one for this week, so I’ll go ahead and post without it.
Posted onJuly 9, 2021|Comments Off on Polar bears have begun to come ashore on Western Hudson Bay
So far, the first evidence I’ve seen of a bear ashore in Western Hudson Bay was one photographed near Churchill Manitoba on 28 June (below).
However, by 5 July, the first of six collared females from Andrew Derocher’s WH study (below) had also come ashore, as did others along the shore of Wapusk National Park. This is not ‘early’ – just earlier than the last few years. Like last year, however, there is still a fair amount of sea ice left on the bay and some bears seem to be choosing to stay out longer on what ‘experts’ describe as unsuitable habitat. As you can see on his bear tracker map, Derocher uses a filter that shows only ice >50% concentration because he and his buddies have decided that bears so dislike anything less that they immediately head to shore as soon as ice levels fall below this threshold.
Posted onJune 23, 2021|Comments Off on Polar bears of western Hudson Bay still on the ice at third week June
According to the tracker map provided by Andrew Derocher (University of Alberta), all of the western Hudson Bay polar bear females that still have operational satellite collars (deployed in 2019) are still out on the ice of Hudson Bay. The Explore.org live video cam that sits on the shore of Wapusk National Park just south of Churchill has been capturing images of caribou and birds but so far, no polar bears. Last year, the first bear seen onshore by the cameras (shown in the video) was on 13 July.
It wasn’t until a month later that more bears were seen: the fat mother and cub in the screencap below were spotted on 18 July 2020 and the last of the collared bears didn’t come ashore until late August:
This year at 21 June, only 6 collars still operating but only one of them is anywhere close to shore yet (courtesy Andrew Derocher via twitter, below):
That ice in the middle of the bay is still primarily very thick first year ice, as the chart for this third week of June shows (below):