BRUNSWICK — Cornerstones of Science will host “Science Sleuths: Bird Watching 101” from 6:30 to 7:30 p.m. Wednesday at Curtis Memorial Library, 23 Pleasant St.

The program is for 7- to 12-year-olds and caregivers. Admission is free. Suggested reading for this session includes “Bird Watching with Margaret Morse Nice,” by Michael Elsohn, or “How Do Birds Find Their Way?,” by Roma Gans or “The Puffins Are Back,” by Gail Gibbons. Bring binoculars if you already have them.

Science Sleuths is a monthly parent-child activity session. Each session includes interactive games or experiments to spark discussion and reinforce learning. Science Sleuths meets the second Wednesday of the month, October through May, and is limited to 15 children.

Preregistration begins two weeks ahead of each session. Call 725-5242, Ext. 225, or stop by the library’s youth services desk.