The annual Weir Preserve/Weir Farm National Historic Site Owl Prowl has been rescheduled to Nov. 22.

Weir Preserve and Weir Farm National Historic Site will host their 21st annual Halloween Owl Prowl on Friday evening, Nov. 22, from 7:30 to 9 p.m.

“Owlers” will gather in the Burlingham Barn at Weir Farm National Historic Site for a presentation by Frank Gallo on owls that live in this area. Mr. Gallo is director, Coastal Center at Milford Point, of the Connecticut Audubon Society.

Using slides and props, he will review what makes these birds  such effective raptors of the night. He will also discuss some of the mythology that has evolved around owls.

Following his presentation, the group will proceed to nearby fields where Mr. Gallo will attempt to call in screech owls, barred owls and great horned owls.

Weir Farm is at the corner of Nod Hill Road and Pelham Lane, but parking for the event will be at the Branchville Elementary School, 40 Florida Road, off Route 102, across from Ancona’s Market, in Ridgefield. Free shuttle bus service will run from the school to and from Weir Farm beginning at 7. No parking is available at Weir Farm.

Parents are encouraged to bring children of all ages. There is no charge for the event, and no rain date. Questions may be directed to Weir Preserve program director Bruce Beebe at 203-834-5066.