A combination of "brushy" riparian buffers, open fields, small wetlands, and wooded river edge give a variety of hunting and living spaces for osprey, bald eagles, song birds, and of course waterfowl.  For more on birds being spotted in the area, go to http://www.mbr-pwrc.usgs.gov/Infocenter/Nps/park.htm and don't forget to keep your eye out for deer at the edge of woods, and river otter in the Anacostia River itself. 

To see wildlife, it is best to come at dawn and dusk, and stay in one area quietly making your observations.  You may find turtles mimicking rocks on the banks of the rivers, or a fox looking for a snack or dinner. 

For your safety and theirs, never approach wildlife or allow them to approach you.