• Washington Through the Seasons: A Naturalist’s Journey (Virtual)

    (DC) (Smithsonian Associates) The splendor of springtime in Washington is world-renowned, owing largely to the Japanese flowering cherry trees that have encircled the Tidal Basin for over a century. Yet the cherry blossoms are a single aspect of the city’s spectacular flowering spring, and spring is only one of the city’s vibrant seasons. Smithsonian Associates tour guide, naturalist, and nature-book ...

    $25 – $35
  • Evolution of the Bird Brain (Virtual)

    (MD) (Natural History Society of Maryland) This talk explores the Mesozoic origin of avian flight from the perspective of the dinosaurian brain. Fossil reconstructions will be integrated with advanced imaging to test hypotheses on how the brain of theropods met the sensory and motor changes of this rare and radical behavioral innovation. Amy Balanoff is an assistant professor in the ...

    Free – $5
  • Wild & Wise: 19th Century Women and the Power of Nature

    Rock Creek Park Nature Center and Planetarium 5200 Glover Rd, Washington DC, United States

    (DC) (National Park Service) Step into sturdy boots and grab an imaginary field journal—it’s time to wander back to the 1800s! Long before hashtags and hiking gear, adventurous women were roaming forests, pressing wildflowers, studying birds, and turning curiosity into courage. They weren’t just admiring nature—they were helping spark the Naturalist Movement and laying the groundwork for conservation. Join us ...

  • Celebrate the Natural Heritage of Deanwood

    Deanwood Neighborhood Library 1350 49th St NE, Washington, DC, United States

    (DC) (DC Public Library) It's Spring! Join Capital Nature, Young, Gifted & Green, and Deanwood Library for a multi-generational celebration of Deanwood's natural environment. Hear from individuals - past and present - who are helping keep Deanwood green and beautiful. We will have activities for children and adults. This program is brought to us by Capitol Nature and Young, Gifted ...

  • Junior Rangers Rise!

    Rock Creek Nature Center 5200 Glover Rd NW, Washington, United States

    (DC) (National Park Service) Celebrate Freedom 250 at Rock Creek Park with Junior Rangers Rise! Caring for Parks, Caring for the Future—a two-day, family-friendly event that connects 250 years of American history to the next generation of park stewards. Through hands-on activities, ranger-led programs, and interactive experiences, participants will discover how curiosity, caring for nature, and everyday actions can carry ...

  • Tree Walk at Theodore Roosevelt Island

    Theodore Roosevelt Island Washington DC, United States

    (DC) (Nature Forward) Usher in the merry month of May with a springtime nature stroll on the trails and boardwalk of DC’s Theodore Roosevelt Island with naturalist and author Melanie Choukas-Bradley. This springtime tree walk will take you deep into the island, where swamp and tidal inlet can be explored by boardwalk as willow, bald cypresses, and cattails frame views ...

    $35 – $49
  • Spring Tree Walk in Rock Creek Park

    Peirce Mill 2401 Tilden St NW, Washington DC, United States

    (DC) (Casey Trees) Join us and nature book author Melanie Choukas-Bradley for a three-hour tree walk along scenic Rock Creek and through the upland woods of the Western Ridge Trail. Melanie will show you how to identify American hornbeam, American elm, river birch, American sycamore, boxelder, black walnut and other stalwarts of the floodplain forest. She’ll then lead us into ...

  • What Trees Remember: Climate, Water, and Change (Virtual)

    (MD) (Natural History Society of Maryland) Trees are invaluable record-keepers of the past. Since their annual growth is intrinsically related to a combination of environmental factors, tree ring data can be used like a Rosetta Stone. Dr. Karen King will demonstrate how her research in biogeography and climate change is informed by tree-ring data. We will focus on regional examples from western Maryland to learn what tree rings ...

    Free – $5