
The Riverdale Nature Preservancy
Upcoming Events
City of Forest Day Event in Riverdale Park
Tomorrow - Saturday, October 4th
As part of City of Forest Day across the five boroughs, Riverdale Country School is hosting an event in Riverdale Park this weekend. The event is open to the community and will consist of three parts:
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9:00-10:00 - Nature Walks through Riverdale Park led by 5th Grade students
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10:00-11:00 - Park Stewardship with a focus on removing trash and invasives
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11:00-12:00 - On-campus presentation focused on American elm reforestation
Participants are welcome to join for any/all parts of the event. The check-in table for the event will be located in the parking lot of Riverdale Park. Click here to RSVP for the event.
Additionally, we are excited to announce that our American elm reforestation initiative is underway. We are seeking partner individuals and institutions to plant and monitor these trees as part of a long-term community science experiment. To receive a tree, requirements include:
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A planting site capable of hosting a large tree
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A commitment to tree care during the first few years after planting, including some pruning and watering
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A commitment to complete a brief, annual survey on the health of your tree
If you meet these requirements, then we hope you will complete this form to add your name to our list of potential recipients. Individuals who are selected and able to attend the City of Forest Day presentation (see above) will be able to pick up their American elm trees!
At Dyckman Farmhouse
Are you ready for Path Through History Weekend 2025?!
Join us for this rare opportunity to enjoy a FREE hour-long guided tour of Dyckman Farmhouse Museum! Don’t miss the chance to explore Dyckman Farmhouse Museum's historic Hessian military hut, latest contemporary exhibition, community altar, and permanent collections of early Upper Manhattan history.
Date: October 11, 2025
Time: 11am-12pm
Cost: FREE!
Registration Required? Yes, RSVP on Eventbrite! Only 15 slots available.
Location: Dyckman Farmhouse Museum (on the corner of 204th Street & Broadway)
Dyckman Farmhouse Museum is not ADA accessible and limited accommodations are available. Please review the visitor information on the Dyckman Farmhouse Museum website.
Photo Credits: Lithograph, Collection Dyckman Farmhouse Museum, 1866.

Pollinator Pathway NYC

Pollinators are critical for maintaining local ecology. Most bees have a range of about 750 meters. If there is a break in inviting habitat larger than the polliators' comfortable range, their ability to move about and do their important work is threatened. Pollinator Pathways are initiatives to engage with the local community to create an intentional pathway for pollinators ensuring their free motion to, and through, our area. With enough participation, communities will ensure that a hospitable path for pollinators exists throughout the western hemisphere.
From CALL

CALL has been involved in our local community, including participation in the Riverdale Y Sunday Market and supporting the Daylighting of Tibbetts Brook.
Learn more about their work and how you can support them below!

Photo Credit: https://www.cityaslivinglab.org
National Endowment for the Arts Grants Revoked
We are writing again with disheartening news. On May 2nd, CALL was informed that two National Endowment for the Arts (NEA) grants are being terminated and withdrawn, making an immediate loss of $30,000. This is on top of what was cut from our National Science Foundation grant. You may have received reports from other arts organizations. The spontaneous database of REVOKED NEA FUNDING has calculated over $25M in lost support.
Since 2015, CALL has been working in the NW Bronx, to support community efforts by local activists to daylight Tibbetts Brook through artistic and community-based practices. Our Rescuing Tibbetts Brook initiative has been a cornerstone of our mission. Without the NEA grant, we face significant hurdles in maintaining the momentum and impact of our projects.
This capricious cancellation erodes CALL’s capacity to sustain our work, which is slow and is achieved incrementally from the knowledge we gather, the relationships built over time, and the teams that we bring together. Defunding one project undermines all the cumulative work CALL has invested in.
Our newest project in Corona, Queens began two years ago as we visited sites throughout NYC’s boroughs to uncover new perspectives on complex issues and the consequences of flash flooding. Simultaneously we reignited a partnership with urban ecologist, Eric Sanderson and his colleagues at the New York Botanical Garden, to formulate a synergistic approach to confronting these challenges.
After completing an investigative WALK followed by a community WORKSHOP to better grasp the concerns of residents and move toward projects for envisioning new futures, we have recruited a Neighborhood Project Team (NPT) that nominated and helped inform the artist selection process. We are still in the initial formative phases of this project, which will take roughly six months for the artists to interact with the community and the other team members (Sanderson and his colleagues) to formulate their first steps.
CALL’s loss of funding weakens or may break the chain of connection, knowledge, and creative ingenuity that makes our work meaningful and impactful. We are committed to finding innovative ways to move forward. We hold up the spirit of collaboration and resilience as we navigate these challenges.
We are reaching out to our community and supporters for encouragement and assistance. You can help us bridge this gap and ensure our work continues to thrive. Whether through donations, spreading the word, or sharing your perspective all will make a difference.
Thank you,
Mary, Olivia & the entire CALL team
Learn more about funding from NYC DEP
NYC DEP offers green roof retrofit funding for private property owners in New York City. The goal is to incentivize private property owners to retrofit their roofs with green roofs to manage storm water runoff.
Attend an online workshop to learn more:
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September 10, 2025; 2–3:00pm
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December 10, 2025; 2–3:00pm
