Movement patterns around dens in two Illinois beaver populations 2011-Jan-01· Ramiro D Crego , Nielsen, CK , Didier, K · 0 min read Last updated on 2011-Jan-01 Authors Ramiro D Crego Lecturer in Zoology/Animal Ecology ← Identifying nesting habitats of shorebirds under mink predation in subantarctic environments 2011-Jan-01 Donkey and guanacos abundances and group characteristics before and after donkey removal in Northwestern Argentina 2009-Jan-01 →