Guicking, D., S. Mickstein, P. H. Becker, and R. Schlatter. 2001. Nest site selection by Brown-hood Gull (Larus maculipennis), Trudeau's Tern (Sterna trudeaui) and White-faced Ibis (Plegadis chivi) in a southern Chilean tule marsh. Ornitologia Neotropical