Brighton's Barr Lake State Park is like Boca Raton for bald eagles: While our nation's big birds can summer anywhere, they are increasingly spending their winters here — and one pair stays to nest every year. In fact, the proud mamas and papas of Barr Lake have produced a total of 45 eaglets. The mating season begins in early winter, and by February, there's often an egg or two in the nest. From mid-February to mid-March, Ma and Pa take turns incubating the eggs — which is a perfect time to catch a glimpse. The best place to see the nest is at the Barr Lake gazebo, which is an easy 1.3-mile walk from the Nature Center, where you can borrow a pair of binoculars with which to ogle these most American of birds.