Bird Walk + City Nature Challenge Walk at Theodore Roosevelt Is.
Theodore Roosevelt Island Washington DCCNC iNaturalist Bioblitz on Mount Vernon Trail
Daingerfield Island Marina Washington Sailing Marina 1 Marina Dr, AlexandriaWeek of Events
2026 City Nature Challenge
(DMV) Join community and citizen scientists all over the globe to observe wildlife: animals, plants, and fungi in backyards, neighborhoods, and parks in urban areas. Using iNaturalist to document them, you can share your observation to help scientists track the wildlife that share our urban areas. See DC metro area events here and in this calendar. Register to track you ...
Sunday, April 26, 2026
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April 26, 2026 -Sunday Morning Bird Walk at Dyke Marsh
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April 26, 2026 -Bird Walk + City Nature Challenge Walk at Theodore Roosevelt Is.
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April 26, 2026 -CNC iNaturalist Bioblitz on Mount Vernon Trail
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April 26, 2026 -CNC Observation with Arlington Master Naturalists
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April 26, 2026 -Native Plant Walk at Meadowlark
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April 26, 2026 -CNC Observation with DC Master Naturalists
Sunday Morning Bird Walk at Dyke Marsh
(VA) (Friends of Dyke Marsh) Join FODM for a bird walk every Sunday at 8 a.m. The Dyke Marsh Wildlife Preserve is a freshwater, tidal marsh on the Virginia side of the Potomac River in Fairfax County. It is a unit of the George Washington Memorial Parkway, U.S. National Park Service.
Bird Walk + City Nature Challenge Walk at Theodore Roosevelt Is.
(Capital Nature) (DC Bird Alliance) (Northern VA Bird Alliance) We’ll be looking for birds and making nature observations using the iNaturalist app as part of the global City Nature Challenge—an annual effort to document local biodiversity. From songbirds to insects and plant life, every observation contributes to a broader understanding of the ecosystems around us.
CNC iNaturalist Bioblitz on Mount Vernon Trail
(VA) (Friends of the Mount Vernon Trail) Help document and learn more about animal and plant species on the Mount Vernon Trail. Join us to find and document plants and animals for the City Nature Challenge! A Bioblitz is a communal citizen-science effort to record as many species within a designated location and time period as possible. Bioblitzes are also ...
CNC Observation with Arlington Master Naturalists
(VA) (Arlington Regional Master Naturalists) Bring curiosity and a camera (mobile phone cameras are great!) to explore the hill and hollows of Brandymore Castle for the City Nature Challenge. Photograph wild plants and critters to upload to iNtauralist to help the greater DC area excell in this friendly worldwide competition. After the guided trek, feel free to explore on your ...
Native Plant Walk at Meadowlark
(VA) (NOVA Parks) Experience the beauty of spring woodlands on a guided walk through Meadowlark Botanical Gardens' Potomac Valley Collection! Led by Keith Tomlinson, former Garden Manager who developed and curated Meadowlark's native plant collection, this walk offers a unique opportunity to explore the region’s rich botanical diversity. With 45 years of experience in botanical gardens, museums, environmental education, and ...
CNC Observation with DC Master Naturalists
(VA) (Capital Nature) Join DC Master Naturalists and Capital Nature for our annual City Nature Challenge observation at Fort Dupont Park. Fort Dupont hosts some of DC's most abundant biodiversity of birds, fungi, and plants (as well as invasive plant challenges), but they often go unnoticed. Help us put this green gem on the map while you enjoy a restorative ...
Monday, April 27, 2026
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April 27, 2026 -Monday Morning Birdwalk at Huntley Meadows
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April 27, 2026 -City Nature Challenge: Nocturnal Naturalists at Bull Run Regional Park
Monday Morning Birdwalk at Huntley Meadows
(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.
City Nature Challenge: Nocturnal Naturalists at Bull Run Regional Park
(VA) (NOVA Parks) (Capital Nature) (MNCPPC) Join us for this global community science event by making observations on the free app iNaturalist. We'll set out to observe as many nocturnal critters as we can. We will also be setting up a mothing station and using a UV lights to locate critters that glow in the dark. It shapes up to ...
Tuesday, April 28, 2026
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April 28, 2026 -Tuesday Morning Bird Walk at Kenilworth
Tuesday Morning Bird Walk at Kenilworth
(DC) (National Park Service) We invite you to join National Park Service volunteer and expert birder Molly Hermann for an engaging bird walk at Kenilworth Aquatic Gardens. This event is open to all, including those new to birding. We encourage participants to bring water, sunscreen, and binoculars if available. A limited number of binoculars are available for loan with a photo ID. ...
Wednesday, April 29, 2026
No events on this day.
Thursday, April 30, 2026
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April 30, 2026 -Anacostia River Discovery Boat Tour
Anacostia River Discovery Boat Tour
(DC) (Anacostia Watershed Society) Join the Anacostia Watershed Society for a 1-hour Anacostia River Discovery Series boat tour to explore the ecological and historical changes that have occurred in the river and in the communities around the river. We will have the opportunity to witness some of the restoration of river habitats and how it has caused the rebound of ...
Friday, May 1, 2026
No events on this day.
Saturday, May 2, 2026
No events on this day.