(VA) (Friends of Dyke Marsh) Help us map Potomac River tides October 10 to 12 during the highest tides of the year, called “king tides.” Participants will use a mobile app that collects location-based data points along the water’s edge. Sponsors will hold a training before the mapping event. This data can help researchers develop models that simulate tidal dynamics ...
(DC) (DC Bird Alliance) Join us for a bird walk of Roosevelt Island. See you outside!
(DC) (National Gallery of Art) Experience the wonder of nature through the eyes of artists. During the dawn of European natural history in the 16th and 17th centuries, advancements in scientific technology, trade, and colonial expansion allowed naturalists to study previously unknown and overlooked insects, animals, and other beestjes, or “little beasts.” A delight for all ages, this exhibition features ...
(MD) (Mycological Society of Washington) Join us for a day of forays and fun at Brookside Gardens Sunday October 12, from 12 pm to 5 pm. Open to the general public, the 2025 MAW Mushroom Fair will feature several mushroom-themed demonstrations, including a walkthrough of interesting mushroom specimens by our club’s expert identifiers, spore microscopy, mycelial sculpting, mushroom cultivation and ...
(MD) (Montgomery Parks) Join James, Weed Warrior Supervisor, for a non-native, invasive plant removal workday in Long Branch Stream Valley Unit 1 (between Piney Branch Rd and Carroll Ave), in Takoma Park, MD. More details, including the exact meeting location, will be emailed to you after you register. We will focus on non-native, invasive vines, especially porcelainberry (Ampelopsis glandulosa var. ...
(VA) (Friends of Huntley Meadows) The Monday Morning Bird Walk is sponsored by the Friends of Huntley Meadows Park and takes place every Monday at 8 a.m. Following the walk, members of the group gather at the nearby Denny’s for breakfast and to compile the morning’s bird list. All are welcome.
(MD) (DC Bird Alliance) We're getting together with the Montgomery Bird Club (MBC) for a different kind of birding ... a bird sit! Grab your lawn chairs and your blankets and we'll observe all the birds we can from 8AM to noon while sitting or standing in a 17-foot diameter circle. Drop in for a while or stay the whole ...
(DC) (Dumbarton Oaks Park Conservancy) Help DOPC conserve and restore this jewel in the middle of the city in DC.
