what are the feathers on top of a peacock's head called
Peafowl The Indian peacock has iridescent blue and green plumage, mostly metallic blue and green. But the green peacock has green and bronze body feathers. In both species females are as big as males but lack the train and the head ornament.[2] The peacock "tail," known as a "train," consists not of tail quill feathers, but highly elongated upper tail coverts. These feathers are marked with eyespots, best seen when a peacock fans his tail. Both sexes of all species have a crest atop the head. The Indian peahen has a mixture of dull grey, brown, and green in her plumage. The female also displays her plumage to ward off female competition or signal danger to her young.
Papilionaceous flower The flowers have a bilateral symmetry with the corolla consisting of five petals. A single, large, upper petal is known as the banner (also vexillum or standard petal). The semi-cylindrical base of the banner embraces and compresses two equal and smaller lateral wings (or alae). The wings in turn enclose a pair of small keel petals, that are situated somewhat lower than the wings, but are interior to them.[1] They have concave sides and correspond with the shape of the wings. The two keel petals are fused at their bases[3] or stuck together[4] to form a boat-shaped structure that encloses the essential flower organs,[5] namely the androecium and gynoecium. Typically these flowers have a vexillary (i.e. descendingly imbricate or overlapping) aestivation.[3]