For most birds, the orange appearance is a result of carotenoid pigments in their diet, as well as their metabolism. The structure of a bird’s feathers can also affect the overall color and orange hue.
For example, worn plumage may lose color, and the bird’s posture can affect how light reflects off individual feathers, changing the appearance of different colors. On the other hand, some bird species have geographic differences in color between different populations. Consequently, male and female birds may show different degrees or intensities of color.
The gallery below contains beautiful bowerbirds whose crimson top bleeds into a vibrant orange. Enjoy!
The Flame Bowerbird

The flame bowerbird has bowers and bright colors and more, because for this flirtatious fellow, it’s all about the eyes.