A favorite local spot.
Take Rte 648 N after crossing the USNA bridge, keep right at the intersection with Greenbury Point Road and 648 N. Go past the Golf course and the Brigade sports complex and you’ll see the Nature Center on the right. Park there, or take the 45 degree right to get to Possum Point.
Access seems to be unrestricted except for fishing, and licenses are occasionally checked. You may occasionally run into a USNA security officer, and they are usually quite polite.
I usually start at Possum Point, where Ospreys and Gulls are abundant in the Spring and Summer. Warblers, Orioles, Waxwings, Hawks can be found as well. Check the boat ramp area for Herons, Kingfishers and Ducks.
There is a tree farm at the beginning of the right hand path that is very productive of passerines, especially Bluebirds, Warblers, Kinglets and Vireos in season. Tower Cable Road and Cable Road are productive as well.
There are two paths behind the Nature Center as well.
Look for deer and foxes any place you go. Summer months call for insect repellent.