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Hoatzins live in the understory of the Amazon Rainforests in Brazil. Hoatzins don’t have much room in their breast bone for big flight muscles instead it’s replaced with a cow-like bird stomach. Hoatzins use synchronized flapping motions of their wings while conserving leg movements. So an adaptation that would benefit the Hoatzin Bird is bigger flight muscles. These flight muscles would be located a little below the breast bone because there is barely any room for bigger flight muscles in the stomach area. There are two pieces of evidence to support my adaptation. First, recently a few of the Amazon Rainforests have burned down, so the Hoatzin Bird would need to fly farther to a safer location. Second, if Hoatzins have this adaptation they would be able to escape from hungry predators easier. All in all this is why bigger flight muscles are the best choice for an adaptation.