National Audubon Society
 

Montana Audubon

Some Great Bird Sites:

Montana Bird Records Committee

Montana Birding Trail

BIRDNET by the Ornithological Council

 USGS Bird Monitoring in North America

Lolo National Forest Wildlife & Birding

American Birding Association

Ninepipe Owl Research Institute

Raptors of the Rockies

Other Environmental Sites:

Union of Concerned Scientists

The Virtual Library of Ecology and Biodiversity
Amazing Environmental Organization Web Directory
Environmental Sites on the Internet