Pavo cristatus
Date 1700-1880
Source/Photographer Buffon II p. 320 pl. 433
Artist François-Nicolas Martinet (1739–1797)  
Source: https://commons.wikimedia.org/wiki/File:Pavo_cristatus_-_1700-1880_-_Print_-_Iconographia_Zoologica_-_Special_Collections_University_of_Amsterdam_-_UBA01_IZ16900213.tif

The Indian peafowl or blue peafowl (Pavo cristatus), a large and brightly coloured bird, is a species of peafowl native to South Asia, but introduced in many other parts of the world. The male, or 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 feathers are raised into a fan and quivered in a display during courtship.