Bearded Barbet - Lybius dubius - PMP Anne Tieber, Population Manager/Studbook Keeper Saint Louis Zoo Louise Bier, AZA Population Manager With assistance from the American Zoo and Aquarium Association Population Management Center January 5, 2009
Bearded Barbet - Lybius dubius - North American Regional Studbook (First Edition) Compiled By: Anne Tieber Saint Louis Zoo January 18, 2007
