Fighting Peacocks dates from 1876. It is a study of Harmony in Blue and Gold: The Peacock Room [YMSM 178].
Fighting Peacocks, New York Public Library
Panel of Fighting Peacocks in
Harmony in Blue and Gold: The Peacock Room, Freer
Gallery of Art
It is fully catalogued in MacDonald 1995 (cat. rais.) [more] (cat. no. 581).