The feathers of the budgerigar, commonly known as a budgie or parakeet, are primarily green and yellow. However, these birds can come in various color mutations, resulting in a wide range of feather colors, including blue, white, and grey. The vibrant green hue is more typical in wild budgies, while selective breeding has produced many color variations in domesticated strains. These colorful feathers are not only visually appealing but also serve as an important part of their social signaling and mating displays in the wild, enhancing their attractiveness to potential mates.