Harpy Eagle Adaptation

The Harpy Eagle's present adaptations is that the Harpy Eagle is short, has broad wings to help it fly straight up, strong legs, and the Harpy Eagle's feathers disguise it in the sky. There is a problem though, Due to the cutdown of trees (deforestation,). The Harpy Eagle is losing there food source. So there prey move away or dies out The Harpy Eagle soon will too, I hope to prevent that, so I want to create new adaptations to the Harpy Eagle witch will be that they will get stronger wings, This will give them longer time span of flying so they will have to land less in dangerous spots. The Harpy Eagle will shed it's feather when it migrates they don't overheat or freeze, so the top will mainly change colors to absorb more heat or absorb less heat.