An exhibition marking the 150th anniversary, on November 24, of the publication of Charles Darwin’s “On the Origin of Species," is comprised of three related sections. In "A Habit of Deciding Influence" are 18 photographs of Darwin’s pigeon specimens at the Natural History of London/Tring. Darwin took up the study of domesticated pigeons in 1855 and his observations of artificial selection in pigeon breeding was invaluable to his understanding of the way species change in natural environments. 2)"Coop" is a mixed-media installation based on Darwin’s five-sided pigeon coop. 3)"Frameworks of Absence: The Extinct Birds of John James Audubon” includes 10 altered prints from “Birds of America.”