In the fall, animals and birds prepare for winter. Bears eat constantly to fatten up before they slow down. Many birds are already on their migration path. Elk and other ungulates are preparing for the mating ritual, the rut. Take a look -- or stop and listen -- in many national parks this fall and you'll catch a glimpse of this autumnal spectacular.

A disadvantage of living in South Georgia is the scarcity of fall colors as the days grow cooler and the nights become longer. The glorious reds, bright yellows, and vivid oranges produced by oaks, maples, cottonwoods, sumac, and other broadleaved trees and shrubs are in short supply where we live. Having both grown up in the Midwest, we miss the changing of the colors during the fall seasons.

They had me surrounded at the border. The border of Wind Cave National Park and Custer State Park, that is. And “they” were a dusty herd of bison, moving from one lush meadow of grass to another, with their skittish young in tow.

In the southwest corner of Pennsylvania, just about an hour shy of the Ohio state line, sit a couple of National Park System units that might not be on your radar. I wouldn’t call them obscure, but being from the West Coast I had not heard of either until my NPS passport led me there a few months ago. Treasury Secretary Albert Gallatin’s wilderness house at Friendship Hill National Historic Site and Fort Necessity National Battlefield, a small palisade built by then Lt. Colonel George Washington at the very beginning of the French and Indian War, introduced me to history that I was only vaguely familiar with.