Award-winning naturalist Mark Glenshaw will give a presentation on hunting and feeding behaviors of the great horned owls Thursday, Aug. 17, at 6:30 p.m. at Washington Public Library, 410 Lafayette St. in Downtown Washington.

Glenshaw, who has studied these owls in Forest Park since 2005, will discuss how he got started studying owls, what he has observed and documented, and why he gives talks on the owls all over Missouri and Illinois.