Enjoy the summer weather and get to know more about our local wildlife at the Patuxent Research Refuge. There is no fee for these events, but many do require advanced registration. North Tract Programs at 230 Bald Eagle Drive include Riding Bicycles to Experience Patuxent Refuge's North Tract, on Saturday July 8 from 1 to 3:30 p.m. Those ages 10 and older on this guided tour discover local wildlife, plants and historical sites, while learning the importance of reducing ecological footprints. Bring your own bike, energy bar/snack, water bottle and helmet. Ride is weather dependent.