For researchers, this winter's mass migration of snowy owls from their breeding grounds above the Arctic Circle to the Great Lakes region is serious business.

Scientists analyzed 27 extreme weather events from 2016 and found that global warming was a “significant driver” for most of them. We look at five cases.

Unidentified Jay sighted in southcentral Alaska, early December.

Walruses were found washed up on the beaches from Cape Espenberg to Shishmaref and further west. Samples taken from the intestines of four walrus all had moderate to high levels of saxitoxin.

More than a thousand dead geese that washed up on the shore near Cambridge Bay, Nunavut, last August appear to have died of natural causes, including toxicity caused by drinking salt water.

Natural causes led to the death of more than 1,000 geese on Long Point beach outside Cambridge Bay this past August, a pathologist’s report has found.

We've seen these birds in the Fairbanks area before but neither my wife or I could recall seeing one at this time of year.

Climate change could be just another challenge for the gray-cheeked thrush and other distinct species.

‘Catastrophic breeding event’ leads to demands for a marine protected area to be set up in East Antarctica

A colourful bird native to the mountains of Central and South America has been spotted in Hopewell Hill, N.B., prompting bird lovers to flock to the area to try to catch a glimpse.

That’s after the bird apparently lost its way to its usual wintering-over grounds far away to the South.

Egret near Inuvik observed by numerous folks in Inuvik.

For the third year in a row, seabirds are washing up dead along the coastline in Alaska. Hundreds of birds have been discovered along a stretch of the Bering Sea, on the Pribilof Islands and as far north as Deering. Julia Parrish said the thin bodies of the dead fulmars and shearwaters washing up on shore suggest the birds are struggling to find enough to eat. So far, about 800 have been discovered along the coast of the Bering Sea. Parish said early lab results don’t point to disease. It looks like the birds are starving to death.

There were lines of cranes flying north and then this morning just before daylight, flying south

Sandhill cranes spotted flying east

Cloudberries observed in new area around Seldovia.

For centuries, marine species have moved around either by hitching ride on the hulls of ships or as stowaways in ballast water. In many instances, species have been deliberately introduced for aquaculture or other commercial purposes.

Hundreds of dead snow geese have washed up on the shores near Cambridge Bay, Nunavut, and it may be some time before officials figure out what caused them to die. David Bird, an emeritus professor of wildlife biology and ornithologist at McGill University, said that while it's impossible to do anything but speculate until tissue analysis is conducted on the dead geese, it's likely that the birds died of disease.