Brittany Sweeney of the Selawik National Wildlife Refuge says the annual Bird Sighting Contest helps scientists pick up changes in bird migration patterns.
"Selawik National Wildlife Refuge"
Western Arctic caribou populations stable, though officials worry about warming climate
A warmer climate in the area is having an effect on permafrost and vegetation that caribou eat.
Nearly 2,000 acres in Selawik refuge ablaze; origins of fire unknown
A fire has burned through almost 2,000 acres since Tuesday morning in the Selawik National Wildlife refuge, about 30 miles southeast of Shungnak.