Peacock in the context of "Structural color"

Juno (English: /ˈdʒuːnoʊ/ JOO-noh; Latin: Iūnō [ˈjuːnoː]) is a goddess in the ancient Roman religion, the protector and special counsellor of the state. She equates to Hera, queen of the gods in Greek mythology and a goddess of love and marriage. A daughter of Saturn and Ops, she is the sister and wife of Jupiter and the mother of Mars, Vulcan, Bellona, Lucina and Juventas. Like Hera, her sacred animal is the peacock. Her Etruscan counterpart is Uni, and she was said to also watch over the women of Rome. As the patron goddess of Rome and the Roman Empire, Juno was called Regina ("Queen") and is a member of the Capitoline Triad (Juno Capitolina), centered on the Capitoline Hill in Rome, with also includes Jupiter, and Minerva, goddess of wisdom.

Juno's own warlike aspect among the Romans is apparent in her attire. She was often shown armed and wearing a goatskin cloak. The traditional depiction of this warlike aspect was assimilated from the Greek goddess Athena, who bore a goatskin, or a goatskin shield, called the Aegis. Juno was also shown wearing a diadem.

The whiplash or whiplash line is a motif of decorative art and design that was particularly popular in Art Nouveau. It is an asymmetrical, sinuous line, often in an ornamental S-curve, usually inspired by natural forms such as plants and flowers, which suggests dynamism and movement. It took its name from a woven fabric panel "Cyclamen", by the German artist Hermann Obrist (1895) which depicted the stems and roots of the cyclamen plant, which critics dubbed "Coup de Fouet" ('whiplash'). The panel was later reproduced by the textile workshop of the Darmstadt Artists Colony.

Curling whiplash lines were modelled after natural and vegetal forms, particularly the cyclamen, iris, orchid, thistle, mistletoe, holly, water lily, and from the stylized lines of the swan, peacock, dragonfly, and butterfly.

The Fantail is a popular breed of fancy pigeon. The American Pigeon Journal had special issues devoted to the breed in February 1975 and July 1977 The magazine is available for viewing in Wikipedia Commons. It is characterised by a fan-shaped tail, resembling a peacock, composed of 30 to 40 feathers, abnormally more than most members of the dove and pigeon family, which usually have 12 to 14 tail feathers. The breed is thought to have originated in Pakistan, India, China, Japan or Spain. There are several subvarieties, such as the English Fantail, the Indian Fantail, which has a peak crest and the Thai Fantail. Charles Darwin used it as one of the examples in the first chapter of his book On the Origin of Species. He believed it was a descendant of the rock dove (Columba livia).

There is a feather mutation called Silky that gives an interesting lace effect to a Fantail's tail feathers. Fantails with this mutation are known as Silky or Lace Fantails.

An eyespot (sometimes ocellus) is an eye-like marking. They are found in butterflies, reptiles, cats, birds and fish.

Eyespots could be explained in at least three different ways. They may be a form of mimicry in which a spot on the body of an animal resembles an eye of a different animal, to deceive potential predator or prey species. They may be a form of self-mimicry, to draw a predator's attention away from the prey's most vulnerable body parts. Or they may serve to make the prey appear inedible or dangerous. Eyespot markings may play a role in intraspecies communication or courtship; a well-known example is the eyespots on a peacock's display feathers.

A secondary sex characteristic is a physical characteristic of an organism that is related to or derived from its sex, but not directly part of its reproductive system. In humans, these characteristics typically start to appear during puberty—and include enlarged breasts and widened hips of females, facial hair and Adam's apples on males, and pubic hair on both. In non-human animals, they can start to appear at sexual maturity—and include, for example, the manes of male lions, the bright facial and rump coloration of male mandrills, and horns in many goats and antelopes.

Secondary sex characteristics are particularly evident in the sexually dimorphic phenotypic traits that distinguish the sexes of a species. In evolution, secondary sex characteristics are the product of sexual selection for traits that show fitness, giving an organism an advantage over its rivals in courtship and in aggressive interactions.