Reliable information about wildlife sightings and animal activity in Yellowstone is often difficult to find online.  However, Yellowstone Reports will keep you accurately  informed of happenings in the Northern tier of the Park.  It is a paid, but inexpensive subscription.  The pages include a great variety of detailed information about Yellowstone, its issues, and its wildlife. It includes exclusive naturalist observations from the field, National Park Service press releases, and articles from journalists and editors from the region. Many reports on these pages are made possible by the cooperative effort of dedicated individuals and skilled naturalist observers. The intent of this site is to inform Yellowstone supporters and educate those want more information about associated conservation issues. Link:  Yellowstone Reports