Boreal owl populations are governed by complex interactions among prey availability, climatic variability and habitat structure in boreal forests. Fluctuations in vole densities drive numerical and ...

On these March nights, a male boreal owl has been singing from a wooden owl box near our home. The late biologist Dave Klein attached the nest box to a black spruce tree north of the University of ...

Northern Minnesota's phenomenowl winter continues. Boreal owls and now great gray owls have come south from Canada's boreal forest seeking food. Such a movement is called an "irruption" by birders.

1. Introduction -- 2. The boreal (or Tengmalm's) owl : in brief -- 3. Study areas and research methods -- 4. Habitat use, roosts and nest-sites -- 5. Interactions with prey animals -- 6. Life-history ...

A small owl has been making a big buzz among Grand Forks birding enthusiasts in recent days. Seeing a boreal owl in the Red River Valley is a rare occurrence, said Dave Lambeth, widely known as the ...

The night sky made the two-hour drive worthwhile. Based on records from many, many years past, I would have been to Cameron Pass three or four times before I finally got there this year. As February ...

Prior to the 1970s, the boreal owl was known to breed from Alaska east across all of Canada, but not south of central British Columbia. Researchers then documented it in high elevation spruce and fir ...

Tiny boreal owls, down from Canada to find food, are drawing birders to Duluth in flocks. The influx, called an "irruption" by birders, occurs about every four years with boreal owls, but this has the ...

Two boreal owls were captured and released by researchers in on Oct. 26, at the Petit Manan National Wildlife Refuge in Steuben. Credit: Courtesy of Tenzin Jampa The first call came in at 11 p.m. on ...

March marks the beginning of winter's end. Rough-legged hawks, northern shrikes, snow buntings and Lapland longspurs will soon be on the move, pushing north toward their still-frozen breeding grounds.