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DTSTART;TZID=America/New_York:20260424T000000
DTEND;TZID=America/New_York:20260427T235900
DTSTAMP:20260424T063722
CREATED:20260419T165527Z
LAST-MODIFIED:20260419T165527Z
UID:10004337-1776988800-1777334340@capitalnature.org
SUMMARY:2026 City Nature Challenge
DESCRIPTION:(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 progress and DC area observations. \nFind out about the global event.
URL:https://capitalnature.org/event/2026-city-nature-challenge/
LOCATION:VA
CATEGORIES:Citizen Science,Nature Observation,Outdoor Experience
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260426T080000
DTEND;TZID=America/New_York:20260426T100000
DTSTAMP:20260424T063722
CREATED:20260325T020152Z
LAST-MODIFIED:20260325T020152Z
UID:10004263-1777190400-1777197600@capitalnature.org
SUMMARY:Sunday Morning Bird Walk at Dyke Marsh
DESCRIPTION:(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.
URL:https://capitalnature.org/event/sunday-morning-bird-walk-at-dyke-marsh-24/
LOCATION:Dyke Marsh\, Alexandria\, VA\, 22307\, United States
CATEGORIES:Birding,Nature Observation,Outdoor Experience
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260426T083000
DTEND;TZID=America/New_York:20260426T103000
DTSTAMP:20260424T063722
CREATED:20260420T221553Z
LAST-MODIFIED:20260420T221553Z
UID:10004342-1777192200-1777199400@capitalnature.org
SUMMARY:Bird Walk + City Nature Challenge Walk at Theodore Roosevelt Is.
DESCRIPTION:(Capital Nature) (DC Bird Alliance) (Northern VA Bird Alliance) \nWe’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.
URL:https://capitalnature.org/event/bird-walk-city-nature-challenge-walk-at-theodore-roosevelt-is/
LOCATION:Theodore Roosevelt Island\, Washington DC\, United States
CATEGORIES:Birding,Nature Observation,Outdoor Experience
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260426T100000
DTEND;TZID=America/New_York:20260426T120000
DTSTAMP:20260424T063722
CREATED:20260419T171041Z
LAST-MODIFIED:20260419T171041Z
UID:10004339-1777197600-1777204800@capitalnature.org
SUMMARY:CNC iNaturalist Bioblitz on Mount Vernon Trail
DESCRIPTION:(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 an excuse for naturalists\, scientists\, and curious members of the public to meet in person in the great outdoors and are a lot of fun! \n\nSee the registration page for exact event location.
URL:https://capitalnature.org/event/cnc-inaturalist-bioblitz-on-mount-vernon-trail/
LOCATION:Daingerfield Island Marina\, Washington Sailing Marina 1 Marina Dr\, Alexandria\, VA\, 22314\, United States
CATEGORIES:Citizen Science,Nature Observation,Outdoor Experience
GEO:38.8332089;-77.0416836
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Daingerfield Island Marina Washington Sailing Marina 1 Marina Dr Alexandria VA 22314 United States;X-APPLE-RADIUS=500;X-TITLE=Washington Sailing Marina 1 Marina Dr:geo:-77.0416836,38.8332089
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260426T140000
DTEND;TZID=America/New_York:20260426T150000
DTSTAMP:20260424T063722
CREATED:20260419T164234Z
LAST-MODIFIED:20260419T164234Z
UID:10004336-1777212000-1777215600@capitalnature.org
SUMMARY:CNC Observation with Arlington Master Naturalists
DESCRIPTION:(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 own. Wear sturdy shoes and long pants to protect from prickles and poison ivy. \nFor more information\, click https://citynaturechallengedc.org/ \n  \n 
URL:https://capitalnature.org/event/cnc-observation-with-arlington-master-naturalists-2/
LOCATION:Madison Manor Park\, 6225 12th Rd N\, Arlington\, VA\, 22205\, United States
CATEGORIES:Citizen Science,Nature Observation,Outdoor Experience
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260426T140000
DTEND;TZID=America/New_York:20260426T150000
DTSTAMP:20260424T063722
CREATED:20260422T124531Z
LAST-MODIFIED:20260422T124531Z
UID:10004344-1777212000-1777215600@capitalnature.org
SUMMARY:Native Plant Walk at Meadowlark
DESCRIPTION:(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. \nWith 45 years of experience in botanical gardens\, museums\, environmental education\, and plant conservation\, Keith brings a wealth of knowledge and insight to this immersive tour. His expertise and passion for native plants will deepen your appreciation for the beauty and ecological importance of our local flora and fauna\, information that will be helpful to those who are interested in adding native plants to their own yards.
URL:https://capitalnature.org/event/native-plant-walk-at-meadowlark/
LOCATION:Meadowlark Botanical Gardens\, 9750 Meadowlark Gardens\, Vienna\, VA\, 22182\, United States
CATEGORIES:Nature Observation,Outdoor Experience,Plants
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260426T160000
DTEND;TZID=America/New_York:20260426T173000
DTSTAMP:20260424T063722
CREATED:20260419T172320Z
LAST-MODIFIED:20260419T174957Z
UID:10004340-1777219200-1777224600@capitalnature.org
SUMMARY:CNC Observation with DC Master Naturalists
DESCRIPTION:(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 walk with naturalists. The walk will be led by wildlife biologist Carrie Seltzer from iNaturalist. \nThe late afternoon starting time will increase our opportunities to hear local and migratory birds! \n 
URL:https://capitalnature.org/event/cnc-observation-at-fort-dupont-with-dc-master-naturalists/
LOCATION:Fort Dupont Park\, Minnesota Ave SE\, Washington DC\, 20019\, United States
CATEGORIES:Citizen Science,Nature Observation,Outdoor Experience
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260427T070000
DTEND;TZID=America/New_York:20260427T090000
DTSTAMP:20260424T063722
CREATED:20260325T020521Z
LAST-MODIFIED:20260325T020521Z
UID:10004268-1777273200-1777280400@capitalnature.org
SUMMARY:Monday Morning Birdwalk at Huntley Meadows
DESCRIPTION:(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. \n 
URL:https://capitalnature.org/event/monday-morning-birdwalk-at-huntley-meadows-21/
LOCATION:Huntley Meadows\, 3701 Lockheed Blvd\, Alexandria\, VA\, 22306\, United States
CATEGORIES:Birds,Nature Observation,Outdoor Experience
GEO:38.75372;-77.109302
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Huntley Meadows 3701 Lockheed Blvd Alexandria VA 22306 United States;X-APPLE-RADIUS=500;X-TITLE=3701 Lockheed Blvd:geo:-77.109302,38.75372
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260427T200000
DTEND;TZID=America/New_York:20260427T220000
DTSTAMP:20260424T063722
CREATED:20260416T155610Z
LAST-MODIFIED:20260416T160927Z
UID:10004333-1777320000-1777327200@capitalnature.org
SUMMARY:City Nature Challenge: Nocturnal Naturalists at Bull Run Regional Park
DESCRIPTION:(VA) (NOVA Parks) (Capital Nature) (MNCPPC) \nJoin 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 be a great way to wrap up the City Nature Challenge and we hope to see you there!
URL:https://capitalnature.org/event/city-nature-challenge-nocturnal-naturalists-at-bull-run-regional-park/
LOCATION:Atlantis Water Park at Bull Run\, 7700 Bull Run Drive\, Centreville\, VA\, 20121\, United States
CATEGORIES:Citizen Science,Family,Nature Observation,Outdoor Experience
GEO:38.8057317;-77.4759334
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Atlantis Water Park at Bull Run 7700 Bull Run Drive Centreville VA 20121 United States;X-APPLE-RADIUS=500;X-TITLE=7700 Bull Run Drive:geo:-77.4759334,38.8057317
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260428T083000
DTEND;TZID=America/New_York:20260428T100000
DTSTAMP:20260424T063722
CREATED:20260325T020946Z
LAST-MODIFIED:20260325T020946Z
UID:10004275-1777365000-1777370400@capitalnature.org
SUMMARY:Tuesday Morning Bird Walk at Kenilworth
DESCRIPTION:(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. \nThe walk will be conducted at a leisurely pace\, covering approximately one mile. We will gather in front of the visitor center\, and the duration of the walk will typically range from 1.5 to 2 hours\, depending on our observations. We look forward to sharing this delightful experience with you!
URL:https://capitalnature.org/event/tuesday-morning-bird-walk-at-kenilworth-11/
LOCATION:Kenilworth Aquatic Gardens\, 1550 Anacostia Ave\, NE\, Washington DC\, 20019\, United States
CATEGORIES:Birds,Nature Observation,Outdoor Experience
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260430T180000
DTEND;TZID=America/New_York:20260430T190000
DTSTAMP:20260424T063722
CREATED:20260412T133931Z
LAST-MODIFIED:20260412T133931Z
UID:10004311-1777572000-1777575600@capitalnature.org
SUMMARY:Anacostia River Discovery Boat Tour
DESCRIPTION:(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 the wildlife.
URL:https://capitalnature.org/event/anacostia-river-discovery-boat-tour-3/
LOCATION:Diamond Teague Pier\, 1520 First St. SE\, Washington\, DC\, 20003\, United States
CATEGORIES:Outdoor Experience,Tour,Watershed Ecology
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