2.) On Saturday, stock up on gear at the Hunting, Fishing and Gun Show at the Baltimore County Game and Fish Protective Association, 3400 Northwind Road, Baltimore. The show, in its 12th year, runs from 8 a.m. to 4 p.m.

3.) Go stargazing Saturday with the Westminster Astronomy Club at Soldiers Delight Natural Environment Area, 8 p.m. to 10 p.m. Find out who's shooting arrows at the Swan and take a trip through the Summer Triangle on a Flying Horse. The free program is rain or shine. Call 877-794-0606 to register.

4.) Learn to play Disc Golf Sunday at the Patapsco Valley State Park's McKeldin Area, 2 p.m. to 4 p.m. The course has two tee boxes and multiple pin positions for every hole. Acquire basic technique and learn rules, strategy and scoring. The cost is $2 per person. Suitable for players 12 years old and up. Follow signs to disc golf parking lot. Bring water. Call 410-461-5005 to sign up.

5.) End the weekend watching thousands of chimney swifts swoop into their roosts in Hampden's chimneys. The Baltimore Bird Club's Swift Watch Team will be gathering at 6:45 p.m. Sunday at either the Mill Center parking lot in Hampden or at the Druid Hill Park Conservatory to count the birds. The results of "Swift Night Out" will be combined with national tallies and listed at chimneyswifts.org. The swifts occasionally switch nightly roosting sites between the Hampden and the conservatory chimneys, so check the BBC website Friday to confirm the location. Come a half hour early if the weather is cloudy or gray; the watch will be cancelled if it's raining. Swift Leader Joan Cwi has details at 410-467-5352 or jafjsc@verizon.net.