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NOTICE: Today's Event has been RESCHEDULED. Check details on the Events page.
Membership Only Events
Events are for members only unless otherwise indicated.
Please RSVP. For details, contact us at 201-784-0484 or email us at pnanaturalist@gmail.com.
Upcoming Events
3 days to the event
Jun 13, 2026, 9:00 AM – 10:30 AM
Come help us find signs of birds that breed in or around
Greenbrook during the summer.
10 days to the event
Jun 20, 2026, 1:00 PM – 2:00 PM
First hike of the new summer through the sanctuary and
along the cliff edge.
17 days to the event
Jun 27, 2026, 1:00 PM – 2:30 PM
Jacob Chen is a student at the United Nations
International School and a buddy Entomologist. For more
about Jacob Chen see page 4 of the Newsletter.
Multiple Dates
31 days to the event
Jul 11, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
31 days to the event
Jul 11, 2026, 10:00 AM – 2:00 PM
Help us find, identify and tally butterflies found in
Greenbrook. Sponsored by the North American Butterfly
Association.
32 days to the event
Jul 12, 2026, 1:00 PM – 2:30 PM
A leisurely stroll through the sanctuary to look and listen
for summer plants and animals. See Sunday, June 7 for
more info.
38 days to the event
Jul 18, 2026, 10:00 AM – 2:00 PM
Annual Butterfly Count
Help us find, identify and tally butterflies found in
Greenbrook. Sponsored by the North American Butterfly
Association.
Multiple Dates
38 days to the event
Jul 18, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
45 days to the event
Jul 25, 2026, 10:00 AM – 12:00 PM
Take a walk inside each of Greenbrook's three(3) deer
exclosures, and find out what's growing.
Leader: Sandy Bonardi
Multiple Dates
45 days to the event
Jul 25, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
Multiple Dates
52 days to the event
Aug 01, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
52 days to the event
Aug 01, 2026, 1:00 PM – 2:30 PM
Discover the variety of Dragonflies and Damselflies that
inhabit Greenbrook Sanctuary. Binoculars are helpful for
best viewing. This is also a good opportunity for
photography. Cameras with long telephoto lenses are
recommended.
59 days to the event
Aug 08, 2026, 10:00 AM – 12:00 PM
Paul Sadowski from the New York Mycological Society will
guide us on an introduction to the great variety of Fungi
found within Greenbrook�s boundaries.
Multiple Dates
59 days to the event
Aug 08, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
66 days to the event
Aug 15, 2026, 10:00 AM – 12:00 PM
A leisurely stroll through the sanctuary to look and listen
for Late spring plants and animals. This is the first of three
scheduled walks. Each one will cover a different area in
the Sanctuary.
Multiple Dates
66 days to the event
Aug 15, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
73 days to the event
Aug 22, 2026, 10:00 AM – 11:00 AM
Learn to identify trees using leaves, seeds and bark.
Multiple Dates
73 days to the event
Aug 22, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
Multiple Dates
80 days to the event
Aug 29, 2026, 10:00 AM – 11:00 AM
Come join Nancy Hoffman, Ph.D, at Greenbrook�s Pavilion
for Tai Chi warm-up exercises and Part I of a Yang style
Tai Chi long form. Classes are suitable for beginners as
well as those with some experience. Feel free to drop in for
a class that fits your schedule. Members are encouraged
to bring a fr
80 days to the event
Aug 29, 2026, 7:30 PM – 8:30 PM
A stroll through the Sanctuary to uncover some hidden
secrets of late summer night life, with a focus on insects.
See Sunday, June 7 for more info.ries.
Membership is required to enjoy our park as well as all the events.
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