Snowy owls, really icy owls?

This is a video in Portuguese about banding a snowy owl chick at its nest.

From the Natural Sciences and Engineering Research Council in Canada:

Snowy owl — a marine species?

Wildlife satellite studies could lead to a radical re-thinking about how the snowy owl fits into the Northern ecosystem.

“Six of the adult females that we followed in a satellite study spent most of last winter far out on the Arctic sea ice,” said Université Laval doctoral student Jean-Francois Therrien, who is working with Professor Gilles Gauthier as part of an International Polar Year (IPY) research project to better understand key indicator species of Canadian northern ecosystems.

The finding flabbergasted the biologists who are now curious to find out if Inuit seal hunters ever encounter the large white birds on the ice in winter darkness.

“As for what the birds were doing there, they were possibly preying on seabirds,” said Gauthier. “Bird researchers at coastal field sites have observed snowy owls attacking eiders in winter. This hypothesis will be strengthened if we can match up the locations of our birds with the position of open water leads in the ice as recorded by other satellite data.”

The researchers find it intriguing that the top Arctic bird predator, like the top mammal – the polar bear, is also part of the marine ecosystem. The possible implications for the species will be discussed by Therrien this Wednesday in Quebec City at the Arctic Change Conference, one of the largest international research conferences ever held on the challenges facing the north.

It was very surprising, said Therrien, how far the individual birds migrated from where they were banded on their nesting grounds on Bylot Island, north of Baffin Island.

“The satellite data showed just how dramatic the owl movements are. They flew huge distances. One owl went to Ellesmere Island, another flew straight to North Dakota and a third ended up on the eastern point of Newfoundland,” he said.

The researchers say that this winter should provide many southern Canadians with a better than normal opportunity to see the magnificent birds.

“We had the largest abundance of lemmings in many years in our study area this past summer,” said Gauthier. “The owls had no problems raising young, so we were informally predicting a strong outward movement of young owls this winter.”

And indeed, judging by numerous newspaper reports and naturalist sightings, that prediction has already come true.

In fact, if anyone has a really ingenious idea to keep them away from airports, there is at least one airport authority that would like to hear from you. One owl-plane collision has already been reported this year at Montreal-Trudeau International Airport in Dorval.

“The support from IPY and NSERC and the advances in satellite technology have given a huge impetus to what promises to be a revolution in our understanding of this key northern species,” said Gauthier. That knowledge can’t come soon enough, the two researchers said.

See also here.

Snowy owl in Minneapolis, USA: here.

Snowy owl in Cornwall: here.

Snowy owl in the Channel Islands: here.

Snowy owl on Guernsey: here.

July 2010: A major new campaign to restore Jersey’s coastlands has been launched. The initiative is a bid to revive the island’s decline or locally extinct farmland bird species and is a joint venture by Durrell Wildlife Conservation Trust, the National Trust for Jersey and the States of Jersey Planning and Environment Department: here.

Snowy owl returns to the Hebrides for 8th year: here.

Texel snowy owl, goshawk, and brent goose: here.

Brilliant feathers of white snowy owls dazzle rivals: here.

Canadian botanists embark on old-school Baffin study: here.