#1 The Secretary
Understanding the differences between bird plumages is vital to everyone who want to identify them. The term refers to a bird's feathers, including the color and pattern those feathers produce.
Birds have developed intricate plumages due to various aspects, including protection from predators, via camouflage, and sending sexual signals to potential mates. Birds usually lose and replace their feathers at least once a year through molt and regrowth.
"Each feather on a bird's body is a finely tuned structure that serves an important role in the bird's activities," Mya Thompson, the co-director for Engagement in Science and Nature for the Cornell Lab, wrote. "Feathers allow birds to fly, but they also help them show off, blend in, stay warm, and keep dry."