Young Onset Parkinson’s Disease Support Group meeting 2 to 4 p.m. at the Good Shepherd Lutheran Church, 510 Albany-Shaker Road, Loudonville, New York. Dr. Julie Lynch, a clinical neuropsychologist, is the speaker.  There is networking and no admission charge. Patients and caregivers are welcome to attend to learn more about Parkinson’s disease.   518-783-3492 or 518-371-0448, after 3 p.m.

“Flight Paths” Talk and Book Signing. 2 p.m. A pair of peregrine falcons spent the summer at Thacher Park and a family of bald eagles is frequently seen at Thompson’s Lake. These species were brought back from near extinction and are now thriving because of ground-breaking work done here in New York. Author Darryl McGrath will talk about her book, which recounts the trials and tribulations of people dedicated to the survival of bird species at risk. Books will be available for purchase. Call 872-0800 for more information.

Farm Succession Retreat. 10 a.m. to 2 p.m. CCE Albany County, 24 Martin Road, Voorheesville, NY, 12186. This two-part workshop is being called a retreat in order to give you a chance to learn and start the process to a successful farm transition plan. $20 per farm. Two people per farm.

Half Moon Button Club will meet at 11 a.m. at the Bethlehem Public Library, 451 Delaware Avenue, Delmar.  The social time starts at 11 a.m. and the business meeting starts at 12 noon followed by this month's program by Lucite Buttons. Bring a bag lunch.  Dessert will be provided.  For more information call Lisa at 469-7420 or Kirsti at 869-8125.

Snowshoe Walk at Thacher Nature Center. Join us on a winter walk through woods and fields on Nature Center trails at 10 a.m. We’ll explore a variety of habitats and look for signs of wildlife. Bring your snowshoes or rent a pair of ours. If we don’t have snow, we’ll take a winter walk. Call 872-0800 to register, reserve snowshoes, and check conditions. Also Jan. 14.

The Future of Milk Markets and How to Develop an Economic Plan 11 a.m. to 2 p.m. at the CCE Meeting Room, 50 West High St., Ballston Spa. Pre-registration of $18 per person includes lunch. RSVP by Jan. 9 by contacting Tove Ford, 518-765-3518, tff24@cornell.edu. Late registration and walk-ins: $25 per person and no guarantee of lunch or printed materials.

Mapping David Vaughan’s New York with Craig Williams, at Mabee Farm Historic Site, 1100 Main St. Rotterdam Junction, NY 12150. 2 p.m. Join us as we uncover the story of Irishman David Vaughan’s life, from his expertise in drafting maps to his reflections of life on the Erie Canal. Vaughan was an Irish immigrant who came to Albany in the late 1840s. He became recognized for his talent drafting maps and plans, as well as his observations of life along the Erie Canal.

Curious about owls? Learn about the owls that live in the Albany Pine Bush and the signs they leave behind. We will start with a short presentation and then dissect owl pellets, a sign that owls are active in the area. Ages 8 and up. 1 to 2 p.m. Pre-registration required. $3/person, $5/family. (518)456-0655.

Old Songs Community “Barn” Dance with Fennig’s All-Stars. Saturday, at 7 p.m. to 9:30 p.m. First Saturday of the Month (November through May). Fun, simple dances from the U.S. and around the world. For every age and ability. All dances will be taught and will include circles, contras, and squares. Yummy dessert potluck during intermission. $8 per person, children 12 & under are free.

Senior Science Day at the Museum of Innovation and Science, from 3 p.m. to 4 p.m. 15 Nott Terrace Heights, Schenectady, NY 12308. Cost: Senior Admission to miSci ($10.50 adult, $7.50 child age 3-12, $9 senior 65+), Free for miSci members.