Tweets + Shrieks (Painting #12 of 17) George Mullen, Tweets + Shrieks, 2018, barbwire and oil on canvas, 30 x 48 inches. Copyright © 2018 George Mullen. All rights reserved. Tweets + Shrieks (Painting #12 of 17) George Mullen, Tweets + Shrieks, 2018, barbwire and oil on canvas, 30 x 48 inches. Copyright © 2018 George Mullen. All rights reserved.