First published on San Diego Zoo Global's Wildlife Field Notes blog The howler monkeys wake me up before my alarm clock does. For a moment, I’m disorientated. Oh, right, I’m in Cocha Cashu. As I dress, I try to make up my mind how I would describe the howlers’ epic serenade to my kids. Like a train roaring through a tunnel? A powerful wind rushing through the tree canopy? Awesome in the true sense of the word. The day is just beginning when I meet Russ at the lake. We collect