One of peacocks, which was walking in The Łazienki Park in Warsaw.
Indian Peafowl or Blue Peafowl (Pavo cristatus) is a large and brightly coloured bird of the pheasant family native to South Asia, but introduced and semi-feral in many other parts of the world. The male, known as a peacock, is predominantly blue with a fan-like crest of spatula-tipped wire-like feathers and is best known for the long train made up of elongated upper-tail covert feathers which bear colourful eyespots. These stiff and elongated feathers are raised into a fan and quivered in a display during courtship. The female lacks the train, has a greenish lower neck and has a duller brown plumage. They are found mainly on the ground in open forest or cultivation where they forage for berries, grains but will also prey on snakes, lizards, and small rodents. Their loud calls make them easy to detect, and in forest areas, often indicate the presence of a predator such as a tiger. They forage on the ground, moving in small groups and will usually try to escape on foot through undergrowth and avoid flying. They will fly up into tall trees to roost, however. It is the national bird of India.
Peafowl are best known for the male's extravagant display feathers which, despite actually growing from their back, are thought of as a tail. The "train" is in reality made up of the enormously elongated upper tail coverts. The tail itself is brown and short as in the peahen. The colours result from the micro-structure of the feathers and the resulting optical phenomena.
Polish name: paw indyjski