Living in a landscape containing salmon fisheries, it should come as no surprise that wolves in southwestern Alaska, including those in Lake Clark National Park and Preserve, eat a diet surprisingly heavy in salmon. A recent study published in the Canadian Journal of Zoology also found a possible increase in wolf pack stability in packs making regular use of salmon as a food resource.

Shiloh National Military Park is replacing the brick wall surrounding the western boundary of the Shiloh National Cemetery.

Last week seabird biologists discovered brown boobies actively nesting on Santa Barbara Island, within Channel Islands National Park off the coast of California. This first record of brown boobies nesting in the park is a significant northward expansion of their breeding range, the National Park Service said.

Since 1966, national scenic and historic trails have been an American priority. They traverse mountains, canyons, forests, and grasslands across the country, crossing creeks and rivers and skirting lakes. These narrow corridors through the wilderness provide recreation and protect historic resources while conserving natural features. There are many physical, emotional, and logistical requirements for these trips, and winter is the perfect season to get in shape and plan for a long walk. Here’s a quick look at a few of these trails to help you plan a trip.