Pietersz Pieter Barbiers . Aliases: Pieter Barbiers; Barbiers ( 1749 - 1842 ) was a Dutch painter. Pietersz Pieter Barbiers s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from USD for in to 6600 USD for STUDY OF A BLACK PARROT ON A TREE BRANCH in 2004 , based on the size and medium of the artwork.