THAT FACE! How do hot birds, naïveté, and reinforcing opportunities tie together? Gular fluttering is one of the ways birds have to cool off. It’s essentially like panting, which is what li’l screech owl is doing here. The gular pouch or sac are the jowly portion below a bird’s (or crocodilian or many other animals’) chin. Juvenile birds are the most susceptible to die during heat waves because they aren’t great at thermoregulating, and they aren’t very experienced when it comes to learning how