Assessment of Foraging Habitats of White-faced Ibis Near Two Breeding Colonies in E. Idaho

Abstract: We studied the habitat use and foraging behavior of white-faced ibis (Plegadis chihi) in areas surrounding the Market Lake and Mud Lake Wildlife Management Areas in eastern Idaho, the two largest breeding colonies in the state, during the 2012 breeding season. We combined road-based driving survey routes with a random, spatially-balanced selection of specific agricultural fields to survey from late April to mid-July in order to thoroughly survey a 22km radius around both breeding colonies. We also conducted group activity and individual behavior assessments during this time period. We were particularly interested in gaining information on associations with specific crop types and irrigation (cultural) practices.