Roots of Resilience: The Beauty and Benefits of our Grasses Presented by Kimberly Simmen, CNLP Saturday March 21, 2026 11am Third House Nature Center 1929 Montauk Highway, Montauk, NY Join us for an engaging and informative presentation on native grasses and discover how to incorporate these beautiful plants into your garden.

WINTER BIRDWATCHING IN MONTAUK Saturday, February 14 10 am - 12 pm. Breakfast provided Lecture will be followed by a bird walk, weather permitting. Third House at Montauk County Park 1929 Montauk Hwy. Montauk, NY (next to Deep Hollow Ranch)

The 2026 Long Island Natural History Conference will be held on Friday, February 27, 2026  at the Stony Brook University Wang Center from 9 am to 4 pm.

A New Year Winter Walk Big Reed Nature Trails, Montauk County Park Saturday, January 3, 2026 | 11AM-1:00PM

The 2nd Americana Christmas Celebration at Third House

Saturday, December 6, 2025, 11:00 am These unique 80’ high parabolic dunes, created by strong northwesterly shifting winds, are slowly marching southeastward covering all in their path. Passing through a maritime pitch pine woodland we will see signs of the Phantom forest. Cradled in the dunes are bogs which are host to many rare and unusual plants. The brackish meadows and interdunal swales shelter many interesting botanical treats which we will be sure to highlight. Rain ca

Third House, Montauk Saturday, November 15, 11am-12pm Third House Nature Center presents a lecture demonstration by Barbara Thomas, longtime East End teaching artist and art lecturer.

Lichens of Long Island with Dr. James Lendemer Nov. 8th, 2025, 11:00 am at Historic Third House in Montauk. Join us for a presentation by Dr. James Lendemer as he takes us on a fascinating journey into the world of lichens. These often-overlooked organisms play vital roles in our forests—providing nitrogen, camouflage, temperature regulation, and seed protection—while adding beauty to our natural landscapes.

Sunday, October 26, 5pm at Third House, Montauk Third House Nature Center presents a free lecture demonstration by Barbara Thomas, longtime East End teaching artist and art history lecturer. We’ll look at some animalist and nature artists—John Jay Audubon, Rosa Bonheur, and others, to study the methods, techniques and science of fauna painting. Barbara will demonstrate using a taxidermy bird. Audience can have drawing materials to participate if wished!

BRINGING THE WOODLAND HOME:SHADE GARDENING WITH NATIVE PLANTS

Where: Third House, near Deep Hollow Ranch, Montauk When: Saturday November 22, 2025, 10:00 am – 2:00 pm From the field to the herbarium and studio, botanist Daniel Atha covers the essentials of making museum-quality preserved plant specimens suitable for research, education and the arts. Students will gain the knowledge and skill to add to existing herbaria or develop one for use as a permanent floristic record, study-aid or graphic art project.