A predatory songbird that feeds on small birds, mammals, and insects, the Northern Shrike is known for its unusual habit of impaling its prey on thorns or barbed wire to save for later.

Naturalist Sarah Gladu of Damariscotta River Association (DRA) will be leading a walk on Saturday, Dec. 1 from 1 to 2:30 p.m. in hopes of spotting Northern Shrike, which often visit here this time of year after breeding in taiga and tundra farther north.

There is no cost to join the walk. Depending on conditions, ice cleats or mini-spikes may be a good idea. Binoculars will be available to borrow. Registration by November 30 is required, and may be done online at damariscottariver.org/events.

Visitors are welcome at the Great Salt Bay Heritage Center in Damariscotta as well as the many other DRA properties throughout the region. For more information call (207) 563-1393, email dra@damariscottariver.org, or visit online at www.damariscottariver.org.