Model railroads, a bird club, a book club and a seed swap are all on tap in the final weeks of January, in the form of free programs offered by Preservation Parks of Delaware County.

This weekend, the Delaware County Model Railroaders will host its monthly open house at Sandel Legacy Trail, 168 S. Vernon St., Sunbury. Hours are 10 a.m.-2 p.m. on Jan. 21, and noon-4 p.m. on Jan. 22. Visitors of all ages will watch model trains travel through a miniature village and learn a bit about railroading in America.

On Monday, Jan. 23, the Delaware County Bird Club will discuss “Birding at Greenlawn Cemetery.” The club, held at Deer Haven Park, 4183 Liberty Road, is open to anyone interested in birds, regardless of expertise.

Doors open at 6:30 p.m.; the program begins at 7 p.m. and is followed by socializing and reports of bird sightings. Gallant Farm, located at 2150 Buttermilk Hill Road, will host two programs. On Jan. 25, staff and volunteers will host the Gallant Farm Book Club, starting at 6:30 p.m.

The club features books that were written during or about the 1930s or ’40s; this month, the chosen book is A Tree Grows in Brooklyn, by Betty Smith. Participants should read ahead and come prepared for a fun, lively discussion. This program is for ages 14 and older.

On Jan. 28, the Delaware County Master Gardeners will team up with farm staff at 10 a.m. to celebrate “National Seed Swap Day.” Participants are invited to bring heirloom seeds to swap for other seeds and plants. There will be extra seeds for those who have none to share. This program is open to all ages.

For information about parks and programs, visit www.preservationparks.com.