Donkey and guanacos abundances and group characteristics before and after donkey removal in Northwestern Argentina 2009-Jan-01· Ramiro D Crego , Donadio E, , Vitali M, , Ruiz Blanco M, , Zanon J, , Salvador V, , Veinticinco M, , Guido J , Moschione F · 0 min read Last updated on 2009-Jan-01 Authors Ramiro D Crego Lecturer in Zoology/Animal Ecology ← Movement patterns around dens in two Illinois beaver populations 2011-Jan-01 Capturing and marking newborn vicuñas with ear tag transmitters at San Guillermo National Park, Argentina 2008-Jan-01 →