Home › Words › U › upperpartupperpartupperpart means any of the upper parts of a bird, including the mantle, back, rump and upper part of the tail coverts.EtymologyFrom upper + part.nounAny of the upper parts of a bird, including the mantle, back, rump and upper part of the tail covertse.g.“Upperparts of back and tail and outerside of legs a reddish brown grey with a silvery tinge, turning towards the nape to a rich red;” — 1885, Hermann Schlegel, Fredericus Anna Jentink, Notes from the Royal Zoological Museum - Volumes 7-8, page 101:Definitions & examples from Wiktionary (CC BY-SA 3.0).