Additionally, male eastern kingbirds often erect their head feathers in a slight crest, whereas females’ heads remain less crested, if at all. Source: Internet
According to paleontologist Alan Turner, V. mongoliensis restored by Matthew Martyniuk (2006) showing the large wing feathers evidenced by fossil quill knobs. Source: Internet
After two to three months out of the nest, the juvenile bird grows some orange feathers under its chin and over a similar period this patch gradually extends to complete the adult appearance. Source: Internet
All parkas were decorated with bird feathers, beard bristles of seal and sea-lion, beaks of sea parrots, bird claws, sea otter fur, dyed leather, and caribou hair sewn in the seams. Source: Internet
A feather with no pigment The blues and bright greens of many parrots are produced by constructive interference of light reflecting from different layers of structures in feathers. Source: Internet
After the innermost tertiaries are moulted, the secondaries starting from the innermost begin to drop and this proceeds to the outer feathers (centrifugal moult). Source: Internet